abacus | (noun) a calculator that performs arithmetic functions by manually sliding counters on rods or in grooves | - |
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(noun) a tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave | - |
abdominous | (adjective) having a large belly | Synonyms: paunchy, potbellied |
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abecedarius | (noun) a poem having lines beginning with letters of the alphabet in regular order | - |
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abortus | (noun) a human fetus whose weight is less than 0.5 kilogram when removed or expelled from the mother's body | - |
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abranchious | (adjective) having no gills | Synonyms: abranchial, abranchiate, gill-less |
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abstemious | (adjective) sparing in consumption of especially food and drink | - |
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(adjective) marked by temperance in indulgence | Synonyms: light |
abstentious | (adjective) self-restraining; not indulging an appetite especially for food or drink | Synonyms: abstinent |
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acanthous | (adjective) shaped like a spine or thorn | Synonyms: acanthoid, spinous |
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acanthus | (noun) any plant of the genus Acanthus having large spiny leaves and spikes or white or purplish flowers; native to Mediterranean region but widely cultivated | - |
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acarpellous | (adjective) having no carpels | Synonyms: acarpelous |
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acarpelous | (adjective) having no carpels | Synonyms: acarpellous |
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acarpous | (adjective) producing no fruit | - |
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acarus | (noun) any of several mites of the order Acarina | Synonyms: genus Acarus |
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acclivitous | (adjective) sloping upward | Synonyms: rising, uphill |
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acephalous | (adjective) lacking a head or a clearly defined head | - |
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acervulus | (noun) small asexual fruiting body resembling a cushion or blister consisting of a mat of hyphae that is produced on a host by some fungi | - |
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acetous | (adjective) tasting or smelling like vinegar | Synonyms: acetose, vinegarish, vinegary |
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achlamydeous | (adjective) not having a floral envelope or perianth | - |
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achromatous | (adjective) having little or inadequate color | - |
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achromous | (adjective) having no color | Synonyms: achromic |
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acidophilous | (adjective) especially of some bacteria; growing well in an acid medium | Synonyms: acidophilic, aciduric |
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acidophilus | (noun) a bacterium that is used to make yogurt and to supplement probiotics | Synonyms: Lactobacillus acidophilus |
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acidulous | (adjective) being sour to the taste | Synonyms: acid, acidic, acidulent |
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acinous | (adjective) pertaining to one of the small sacs (as in a compound gland) | Synonyms: acinar, acinic, acinose |
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acinus | (noun) one of the small sacs or saclike dilations in a compound gland | - |
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(noun) one of the small drupes making up an aggregate or multiple fruit like a blackberry | - |
acrimonious | (adjective) marked by strong resentment or cynicism | Synonyms: bitter |
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acrocarpous | (adjective) (of mosses) having the archegonia at the top of the stem | - |
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acrogenous | (adjective) pertaining to flowerless plants (ferns or mosses) in which growth occurs only at the tip of the main stem | Synonyms: acrogenic |
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acromphalus | (noun) abnormal protrusion of the navel; sometimes the start of umbilical hernia | - |
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acronymous | (adjective) characterized by the use of acronyms | Synonyms: acronymic |
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actinomorphous | (adjective) capable of division into symmetrical halves by any longitudinal plane passing through the axis | Synonyms: actinomorphic |
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actinomycetous | (adjective) of or belonging to the actinomycetes | Synonyms: actinomycetal |
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aculeus | (noun) a sharp-pointed process especially a sting of a hymenopterous insect | - |
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(noun) a stiff sharp-pointed plant process | - |
adactylous | (adjective) without fingers and/or toes | - |
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adenocarcinomatous | (adjective) of or pertaining to adenocarcinoma | - |
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adenovirus | (noun) any of a group of viruses including those that in humans cause upper respiratory infections or infectious pinkeye | - |
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adscititious | (adjective) added or derived from something outside; not inherent | - |
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(adjective) supplemental; not part of the real or essential nature of a thing | - |
adulterous | (adjective) characterized by adultery | Synonyms: extracurricular, extramarital |
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(adjective) not faithful to a spouse or lover | Synonyms: cheating, two-timing |
advantageous | (adjective) giving an advantage | Synonyms: favorable, favourable |
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(adjective) appropriate for achieving a particular end; implies a lack of concern for fairness | - |
adventitious | (adjective) associated by chance and not an integral part | - |
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adventurous | (adjective) willing to undertake or seeking out new and daring enterprises | Synonyms: adventuresome |
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aeriferous | (adjective) conveying air; as the bronchial tubes | - |
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aerophilous | (adjective) depending on free oxygen or air | Synonyms: aerobic, aerophilic |
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aeschynanthus | (noun) a plant of the genus Aeschynanthus having somewhat red or orange flowers and seeds having distinctive hairs at base and apex | - |
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afflatus | (noun) a strong creative impulse; divine inspiration | - |
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agamous | (adjective) (of reproduction) not involving the fusion of male and female gametes in reproduction | Synonyms: agamic, agamogenetic, apomictic, parthenogenetic |
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agapanthus | (noun) any of various plants of the genus Agapanthus having umbels of showy blue to purple flowers | Synonyms: lily of the Nile |
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ailanthus | (noun) any of several deciduous Asian trees of the genus Ailanthus | - |
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airbus | (noun) a subsonic jet airliner operated over short distances | - |
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alacritous | (adjective) quick and eager | - |
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albuminous | (adjective) relating to or containing or resembling albumin | - |
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alliaceous | (adjective) of or pertaining to the botanical genus Allium | - |
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(adjective) smelling of onions or garlic | - |
allochthonous | (adjective) of rocks, deposits, etc.; found in a place other than where they and their constituents were formed | - |
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allogamous | (adjective) relating to cross-fertilization in plants | - |
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allomerous | (adjective) pertaining to allomerism | - |
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allosaurus | (noun) late Jurassic carnivorous dinosaur; similar to but somewhat smaller than tyrannosaurus | Synonyms: allosaur |
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alphavirus | (noun) an arbovirus of the family Togaviridae that can cause a variety of encephalitis in horses | - |
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altitudinous | (adjective) indefinitely high; lofty | - |
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altocumulus | (noun) a cumulus cloud at an intermediate altitude of 2 or 3 miles | Synonyms: altocumulus cloud |
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altostratus | (noun) a stratus cloud at an intermediate altitude of 2 or 3 miles | Synonyms: altostratus cloud |
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aluminiferous | (adjective) containing alum or aluminum | - |
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aluminous | (adjective) pertaining to or containing aluminum or alum | - |
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alumnus | (noun) a male person who has received a degree from a school (high school or college or university) | - |
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alveolus | (noun) a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways | Synonyms: air cell, air sac |
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(noun) a bony socket in the alveolar ridge that holds a tooth | Synonyms: tooth socket |
ambagious | (adjective) roundabout and unnecessarily wordy | Synonyms: circumlocutious, circumlocutory, periphrastic |
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ambidextrous | (adjective) equally skillful with each hand | Synonyms: two-handed |
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(adjective) marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another | Synonyms: deceitful, double-dealing, double-faced, double-tongued, duplicitous, Janus-faced, two-faced |
ambiguous | (adjective) having more than one possible meaning | - |
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(adjective) open to two or more interpretations; or of uncertain nature or significance; or (often) intended to mislead | Synonyms: equivocal |
(adjective) having no intrinsic or objective meaning; not organized in conventional patterns | - |
ambitious | (adjective) having a strong desire for success or achievement | - |
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(adjective) requiring full use of your abilities or resources | Synonyms: challenging |
amebous | (adjective) pertaining to or resembling amoebae | Synonyms: ameban, amebic, amoeban, amoebic, amoebous |
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amentaceous | (adjective) (of plants) bearing or characterized by aments or catkins | Synonyms: amentiferous |
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amentiferous | (adjective) (of plants) bearing or characterized by aments or catkins | Synonyms: amentaceous |
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ametabolous | (adjective) undergoing slight or no metamorphosis | Synonyms: ametabolic |
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amoebous | (adjective) pertaining to or resembling amoebae | Synonyms: ameban, amebic, amebous, amoeban, amoebic |
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amorous | (adjective) inclined toward or displaying love | Synonyms: amative |
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(adjective) expressive of or exciting sexual love or romance | Synonyms: amatory, romantic |
amorphophallus | (noun) any plant of the genus Amorphophallus | - |
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amorphous | (adjective) lacking the system or structure characteristic of living bodies | Synonyms: unstructured |
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(adjective) without real or apparent crystalline form | Synonyms: uncrystallised, uncrystallized |
(adjective) unclear because vague or badly organized | - |
(adjective) having no definite form or distinct shape | Synonyms: formless, shapeless |
(adjective) (of a group of people or an organization) unorganized or unfocused | - |
amphibious | (adjective) operating or living on land and in water | - |
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(adjective) relating to or characteristic of animals of the class Amphibia | Synonyms: amphibian |
amphioxus | (noun) small translucent lancet-shaped burrowing marine animal; primitive forerunner of the vertebrates | Synonyms: lancelet |
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amphitropous | (adjective) (of a plant ovule) partly inverted; turned back 90 degrees on its stalk | - |
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amylaceous | (adjective) resembling starch | Synonyms: amyloid, amyloidal, farinaceous, starchlike |
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anachronous | (adjective) chronologically misplaced | Synonyms: anachronic, anachronistic |
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anadromous | (adjective) migrating from the sea to fresh water to spawn | - |
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analogous | (adjective) corresponding in function but not in evolutionary origin | - |
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(adjective) similar or equivalent in some respects though otherwise dissimilar | Synonyms: correspondent |
anasarcous | (adjective) characterized by or affected by dropsy | - |
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anatropous | (adjective) (of a plant ovule) completely inverted; turned back 180 degrees on its stalk | Synonyms: inverted |
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androgenous | (adjective) of or related to androgenesis | Synonyms: androgenetic |
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androgynous | (adjective) having both male and female characteristics | - |
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(adjective) relating to or exhibiting both female and male sex organs but with a predominantly female appearance | - |
anemophilous | (adjective) of flowering plants (especially grasses etc) that are pollinated by the wind | - |
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anencephalous | (adjective) characterized by partial or total absence of a brain | Synonyms: anencephalic |
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anestrous | (adjective) (of lower mammals) not in a state of estrus; not in heat | - |
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(adjective) of or relating to anestrus | Synonyms: anestric, anoestrous |
anestrus | (noun) applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus | Synonyms: anestrum, anoestrum, anoestrus |
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anfractuous | (adjective) full of twists and turns | - |
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angelus | (noun) the sound of a bell rung in Roman Catholic churches to announce the time when the Angelus should be recited | Synonyms: angelus bell |
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anginous | (adjective) of or related to the pain of angina pectoris | Synonyms: anginal, anginose |
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angiocarpous | (adjective) having or being fruit enclosed in a shell or husk | Synonyms: angiocarpic |
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angiomatous | (adjective) of or related to or having a tumor of the kind known as an angioma | - |
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angiospermous | (adjective) of or related to or characteristic of plants that are angiosperms | - |
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anhydrous | (adjective) without water; especially without water of crystallization | - |
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animus | (noun) a feeling of ill will arousing active hostility | Synonyms: animosity, bad blood |
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anisogamous | (adjective) relating to a type of sexual reproduction in which the gametes are dissimilar in some respect (as size or shape) | Synonyms: anisogamic |
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