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52 Nouns That End With OS

Part of Speech:
Word Definitions Synonyms
adios (noun) a farewell remark Synonyms: adieu, arrivederci, au revoir, auf wiedersehen, bye-bye, bye, cheerio, good-by, good-bye, good day, goodby, goodbye, sayonara, so long
amnios (noun) thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals) Synonyms: amnion, amniotic sac
arccos (noun) the inverse function of the cosine; the angle that has a cosine equal to a given number Synonyms: arc cosine, arccosine, inverse cosine
asbestos (noun) a fibrous amphibole; used for making fireproof articles; inhaling fibers can cause asbestosis or lung cancer
bathos (noun) triteness or triviality of style
(noun) a change from a serious subject to a disappointing one Synonyms: anticlimax
(noun) insincere pathos Synonyms: mawkishness
benthos (noun) organisms (plants and animals) that live at or near the bottom of a sea, lake, river or stream
(noun) a region including the bottom of the sea and the littoral zones Synonyms: benthic division, benthonic zone
bigos (noun) a Polish stew of cabbage and meat
chaos (noun) (physics) a dynamical system that is extremely sensitive to its initial conditions
(noun) the formless and disordered state of matter before the creation of the cosmos
(noun) a state of extreme confusion and disorder Synonyms: bedlam, pandemonium, topsy-turvydom, topsy-turvyness
chinos (noun) (plural) trousers made with chino cloth
chlorpyrifos (noun) a common organophosphate insecticide
cos (noun) lettuce with long dark-green leaves in a loosely packed elongated head Synonyms: cos lettuce, romaine, romaine lettuce
(noun) ratio of the adjacent side to the hypotenuse of a right-angled triangle Synonyms: cosine
cosmos (noun) everything that exists anywhere Synonyms: creation, existence, macrocosm, universe, world
(noun) any of various mostly Mexican herbs of the genus Cosmos having radiate heads of variously colored flowers and pinnate leaves; popular fall-blooming annuals Synonyms: cosmea
daktylos (noun) a Greek unit of length equal to one centimeter.
dominos (noun) any of several games played with small rectangular blocks Synonyms: dominoes
eidos (noun) (anthropology) the distinctive expression of the cognitive or intellectual character of a culture or a social group
encephalartos (noun) any of numerous cycads of the genus Encephalartos having stout cylindrical trunks and a terminal crown of long often spiny pinnate leaves
epanodos (noun) repetition of a group of words in reverse order
(noun) recapitulation of the main ideas of a speech (especially in reverse order)
epos (noun) a long narrative poem telling of a hero's deeds Synonyms: epic, epic poem, heroic poem
(noun) a body of poetry that conveys the traditions of a society by treating some epic theme
eros (noun) a desire for sexual intimacy Synonyms: concupiscence, physical attraction, sexual desire
ethnos (noun) people of the same race or nationality who share a distinctive culture Synonyms: ethnic group
ethos (noun) (anthropology) the distinctive spirit of a culture or an era
exomphalos (noun) an umbilical hernia at birth in which some abdominal organs push into the umbilical cord
exophthalmos (noun) protrusion of the eyeball from the socket
extrados (noun) the exterior curve of an arch
haematocolpos (noun) accumulation of menstrual blood in the vagina (usually due to an imperforate hymen) Synonyms: hematocolpos
hematocolpos (noun) accumulation of menstrual blood in the vagina (usually due to an imperforate hymen) Synonyms: haematocolpos
hommos (noun) a thick spread made from mashed chickpeas, tahini, lemon juice and garlic; used especially as a dip for pita; originated in the Middle East Synonyms: hoummos, hummus, humous, humus
hoummos (noun) a thick spread made from mashed chickpeas, tahini, lemon juice and garlic; used especially as a dip for pita; originated in the Middle East Synonyms: hommos, hummus, humous, humus
hydramnios (noun) an abnormality of pregnancy; accumulation of excess amniotic fluid
intrados (noun) the interior curve of an arch
kos (noun) (in India) a unit of length having different values in different localities Synonyms: coss
kudos (noun) an expression of approval and commendation Synonyms: congratulations, extolment, praise
lagophthalmos (noun) abnormal condition in which an eye cannot close completely
merobenthos (noun) benthos consisting of organisms in pre-adult stages that later become adult in the plankton.
microbenthos (noun) microscopic benthic organisms that are less than 0.1 mm in size.
nanophthalmos (noun) condition in which both eyes are abnormally small but otherwise normal
omphalos (noun) a scar where the umbilical cord was attached Synonyms: belly button, bellybutton, navel, omphalus, umbilicus
onkos (noun) A high ornate headdress worn by the performers of Greek tragedy.
opisthotonos (noun) severe spasm in which the back arches and the head bends back and heels flex toward the back
os (noun) rigid connective tissue that makes up the skeleton of vertebrates Synonyms: bone
(noun) a mouth or mouthlike opening
pathos (noun) a quality that arouses emotions (especially pity or sorrow) Synonyms: poignancy
(noun) a style that has the power to evoke feelings
(noun) a feeling of sympathy and sorrow for the misfortunes of others Synonyms: commiseration, pity, ruth
peplos (noun) a garment worn by women in ancient Greece; cloth caught at the shoulders and draped in folds to the waist Synonyms: peplum, peplus
pharos (noun) a tower with a light that gives warning of shoals to passing ships Synonyms: beacon, beacon light, lighthouse
pothos (noun) any of various tropical lianas of the genus Scindapsus
(noun) evergreen liana widely cultivated for its variegated foliage Synonyms: Epipremnum aureum, golden pothos, ivy arum, Scindapsus aureus
reredos (noun) a painted or carved screen placed above and behind an altar or communion table Synonyms: altarpiece
rhinoceros (noun) massive powerful herbivorous odd-toed ungulate of southeast Asia and Africa having very thick skin and one or two horns on the snout Synonyms: rhino
rooibos (noun) South African shrub having flat acuminate leaves and yellow flowers; leaves are aromatic when dried and used to make an herbal tea Synonyms: Aspalathus cedcarbergensis, Aspalathus linearis
thermos (noun) vacuum flask that preserves temperature of hot or cold drinks Synonyms: thermos bottle, thermos flask
topos (noun) a traditional theme or motif or literary convention
tournedos (noun) thick steak cut from the beef tenderloin
tripos (noun) final honors degree examinations at Cambridge University
twimbos (noun) a pair of twins, who are sexually promiscuous

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