| aeciospore | (noun) spore of a rust fungus formed in an aecium | - |
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| aerospace | (noun) the atmosphere and outer space considered as a whole | - |
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| angiosperm | (noun) plants having seeds in a closed ovary | Synonyms: flowering plant |
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| arthrospore | (noun) one of a string of thick walled vegetative resting cells formed by some algae and fungi | - |
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| (noun) a body that resembles a spore but is not an endospore; produced by some bacteria | - |
| ascospore | (noun) sexually produced fungal spore formed within an ascus | - |
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| asthenosphere | (noun) the lower layer of the crust | - |
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| atmosphere | (noun) a distinctive but intangible quality surrounding a person or thing | Synonyms: air, aura |
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| (noun) the mass of air surrounding the Earth | Synonyms: air |
| (noun) the envelope of gases surrounding any celestial body | - |
| (noun) a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade | Synonyms: atm, standard atmosphere, standard pressure |
| (noun) the weather or climate at some place | Synonyms: atmospheric state |
| (noun) a particular environment or surrounding influence | Synonyms: ambiance, ambience |
| atmospherics | (noun) a crackling or hissing noise caused by electrical interference | Synonyms: atmospheric static, static |
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| basidiospore | (noun) a sexually produced fungal spore borne on a basidium | - |
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| biosphere | (noun) the regions of the surface and atmosphere of the Earth (or other planet) where living organisms exist | - |
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| blastosphere | (noun) early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs | Synonyms: blastula |
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| blepharospasm | (noun) spasm of the eyelid muscle resulting in closure of the eye | - |
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| bronchospasm | (noun) a spasm of the bronchi that makes exhalation difficult and noisy; associated with asthma and bronchitis | - |
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| cardiospasm | (noun) a spasm of the cardiac sphincter (between the esophagus and the stomach); if the cardiac sphincter does not relax during swallowing the passage of food into the stomach is obstructed | - |
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| carpospore | (noun) a nonmotile spore of red algae | - |
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| cephalosporin | (noun) one of several broad spectrum antibiotic substances obtained from fungi and related to penicillin (trade names Mefoxin); addition of side chains has produced semisynthetic antibiotics with greater antibacterial activity | Synonyms: Mefoxin |
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| chlamydospore | (noun) thick-walled asexual resting spore of certain fungi and algae | - |
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| chromosphere | (noun) a gaseous layer of the sun's atmosphere (extending from the photosphere to the corona) that is visible during a total eclipse of the sun | - |
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| conidiospore | (noun) an asexually produced fungal spore formed on a conidiophore | Synonyms: conidium |
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| cosplayer | (noun) Someone who wears a costume from a comic book or similar media | - |
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| endosperm | (noun) nutritive tissue surrounding the embryo within seeds of flowering plants | - |
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| endospore | (noun) a small asexual spore that develops inside the cell of some bacteria and algae | - |
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| exosphere | (noun) the outermost atmospheric layer | - |
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| extrospection | (noun) examination or observation of what is outside oneself, as opposed to introspection. | - |
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| geosphere | (noun) the solid part of the earth consisting of the crust and outer mantle | Synonyms: lithosphere |
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| gospel | (noun) a doctrine that is believed to be of great importance | - |
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| (noun) the written body of teachings of a religious group that are generally accepted by that group | Synonyms: church doctrine, creed, religious doctrine |
| (noun) an unquestionable truth | Synonyms: gospel truth |
| (noun) folk music consisting of a genre of a cappella music originating with Black slaves in the United States and featuring call and response; influential on the development of other genres of popular music (especially soul) | Synonyms: gospel singing |
| gospeler | (noun) a preacher of the Christian gospel | Synonyms: evangelist, gospeller, revivalist |
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| gospeller | (noun) a preacher of the Christian gospel | Synonyms: evangelist, gospeler, revivalist |
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| graphospasm | (noun) muscular spasms of thumb and forefinger while writing with a pen or pencil | Synonyms: writer's cramp |
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| gymnosperm | (noun) plants of the class Gymnospermae having seeds not enclosed in an ovary | - |
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| haemosporidian | (noun) minute protozoans parasitic at some stage of the life cycle in blood cells of vertebrates including many pathogens | - |
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| haplosporidian | (noun) parasite in invertebrates and lower vertebrates of no known economic importance | - |
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| heliosphere | (noun) the region inside the heliopause containing the sun and solar system | - |
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| heterospory | (noun) the development of both microspores and megaspores | - |
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| homospory | (noun) the development of a single kind of asexual spores | - |
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| hospice | (noun) a program of medical and emotional care for the terminally ill | - |
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| (noun) a lodging for travelers (especially one kept by a monastic order) | - |
| hospitableness | (noun) having a disposition that welcomes guests and is fond of entertaining | - |
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| hospital | (noun) a health facility where patients receive treatment | Synonyms: infirmary |
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| (noun) a medical institution where sick or injured people are given medical or surgical care | - |
| hospitalisation | (noun) placing in medical care in a hospital | Synonyms: hospital care, hospitalization |
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| hospitality | (noun) kindness in welcoming guests or strangers | Synonyms: cordial reception |
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| hospitalization | (noun) placing in medical care in a hospital | Synonyms: hospital care, hospitalisation |
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| (noun) insurance that pays all or part of a patient's hospital expense | Synonyms: hospitalization insurance |
| (noun) the condition of being treated as a patient in a hospital | - |
| (noun) a period of time when you are confined to a hospital | - |
| hospitaller | (noun) title of the member of any of several religious orders that cared for the sick in hospitals. | - |
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| hydrosphere | (noun) the watery layer of the earth's surface; includes water vapor | - |
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| hypospadias | (noun) an abnormal condition in males in which the urethra opens on the under surface of the penis | - |
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| inhospitableness | (noun) having an unfriendly and inhospitable disposition | - |
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| (noun) the environmental condition in a region that lacks a favorable climate or terrain for life or growth | - |
| inhospitality | (noun) unkind and inconsiderate welcome | - |
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| introspection | (noun) the contemplation of your own thoughts and desires and conduct | Synonyms: self-contemplation, self-examination |
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| introspectionism | (noun) a doctrine that psychology must be based essentially on data derived from introspection. | - |
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| introspectiveness | (noun) thoughtfulness about your own situation and feelings | - |
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| ionosphere | (noun) the outer region of the Earth's atmosphere; contains a high concentration of free electrons | - |
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| laryngospasm | (noun) a closure of the larynx that blocks the passage of air to the lungs | - |
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| leptospira | (noun) important pathogens causing Weil's disease or canicola fever | - |
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| leptospirosis | (noun) an infectious disease cause by leptospira and transmitted to humans from domestic animals; characterized by jaundice and fever | Synonyms: swamp fever |
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| leptosporangium | (noun) a sporangium formed from a single epidermal cell; characteristic of the Filicales or of almost all modern ferns | - |
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| lithosphere | (noun) the solid part of the earth consisting of the crust and outer mantle | Synonyms: geosphere |
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| macrosporangium | (noun) a plant structure that produces megaspores | Synonyms: megasporangium |
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| macrospore | (noun) larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte | Synonyms: megaspore |
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| magnetosphere | (noun) the magnetic field of a planet; the volume around the planet in which charged particles are subject more to the planet's magnetic field than to the solar magnetic field | - |
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| mesosphere | (noun) the atmospheric layer between the stratosphere and the thermosphere | - |
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| microsporangium | (noun) a plant structure that produces microspores | - |
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| microspore | (noun) smaller of the two types of spore produced in heterosporous plants; develops in the pollen sac into a male gametophyte | - |
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| microsporidian | (noun) parasite of arthropods and fishes that invade and destroy host cells | - |
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| microsporophyll | (noun) in non-flowering plants, a sporophyll that bears only microsporangia | - |
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| myxosporidian | (noun) mostly parasitic in fishes and including various serious pathogens | - |
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| oligospermia | (noun) insufficient spermatozoa in the semen | - |
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| oosphere | (noun) a gamete; used especially of lower plants | - |
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| oospore | (noun) a thick-walled sexual spore that develops from a fertilized oosphere in some algae and fungi | - |
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| organophosphate | (noun) an insecticide that interferes with an insect's nervous system | - |
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| orthophosphate | (noun) a salt of phosphoric acid | Synonyms: inorganic phosphate, phosphate |
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| osprey | (noun) large harmless hawk found worldwide that feeds on fish and builds a bulky nest often occupied for years | Synonyms: fish eagle, fish hawk, Pandion haliaetus, sea eagle |
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| ozonosphere | (noun) a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun | Synonyms: ozone layer |
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| phosphatase | (noun) any of a group of enzymes that act as a catalyst in the hydrolysis of organic phosphates | - |
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| phosphate | (noun) carbonated drink with fruit syrup and a little phosphoric acid | - |
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| (noun) a salt of phosphoric acid | Synonyms: inorganic phosphate, orthophosphate |
| phosphine | (noun) a colorless gas with a strong fishy smell; used as a pesticide | - |
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| phosphocreatine | (noun) an organic compound of creatine and phosphoric acid; found in the muscles of vertebrates where its hydrolysis releases energy for muscular contraction | Synonyms: creatine phosphate, creatine phosphoric acid |
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| phospholipid | (noun) any of various compounds composed of fatty acids and phosphoric acid and a nitrogenous base; an important constituent of membranes | - |
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| phosphoprotein | (noun) containing chemically bound phosphoric acid | - |
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| phosphor | (noun) a synthetic substance that is fluorescent or phosphorescent; used to coat the screens of cathode ray tubes | - |
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| phosphorescence | (noun) a fluorescence that persists after the bombarding radiation has ceased | - |
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| phosphorus | (noun) a multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells; is highly reactive and occurs in several allotropic forms | Synonyms: atomic number 15, P |
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| photosphere | (noun) the intensely luminous surface of a star (especially the sun) | - |
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| polyphosphate | (noun) a salt or ester of polyphosphoric acid | - |
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| progymnosperm | (noun) an ancestral fossil type from which modern gymnosperms are thought to have derived | - |
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| prospect | (noun) a prediction of the course of a disease | Synonyms: medical prognosis, prognosis |
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| (noun) the visual percept of a region | Synonyms: aspect, panorama, scene, view, vista |
| (noun) belief about (or mental picture of) the future | Synonyms: expectation, outlook |
| (noun) someone who is considered for something (for an office or prize or honor etc.) | Synonyms: candidate |
| (noun) the possibility of future success | Synonyms: chance |
| prospectiveness | (noun) The quality of relating to or furnishing a future prospect. | - |
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| prospector | (noun) someone who explores an area for mineral deposits | - |
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| prospectus | (noun) a catalog listing the courses offered by a college or university | Synonyms: course catalog, course catalogue |
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| (noun) a formal written offer to sell securities (filed with the SEC) that sets forth a plan for a (proposed) business enterprise | - |
| prosperity | (noun) the condition of prospering; having good fortune | Synonyms: successfulness |
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| (noun) an economic state of growth with rising profits and full employment | - |
| prospicience | (noun) seeing ahead; knowing in advance; foreseeing | Synonyms: farsightedness, foresight, prevision |
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| pteridosperm | (noun) an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae) | Synonyms: seed fern |
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| pyrophosphate | (noun) a salt or ester of pyrophosphoric acid | - |
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| retrospect | (noun) contemplation of things past | - |
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| retrospection | (noun) memory for experiences that are past | - |
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| (noun) reference to things past | - |
| retrospective | (noun) an exhibition of a representative selection of an artist's life work | - |
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| rhinosporidiosis | (noun) fungal infection of the nose; often acquired while swimming | - |
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| sarcosporidian | (noun) parasite of the muscles of vertebrates | Synonyms: sarcocystidean, sarcocystieian |
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| stratosphere | (noun) the atmospheric layer between the troposphere and the mesosphere | - |
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| teliospore | (noun) a chlamydospore that develops in the last stage of the life cycle of the rust fungus | - |
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| thermosphere | (noun) the atmospheric layer between the mesosphere and the exosphere | - |
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| triphosphopyridine | (noun) a pyridine ring with three phosphorus groups | - |
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