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Webster’s Dictionary (1828)



19,363 words match “OS”

OSTRACEAN n.
Any one of a family of bivalves, of which the oyster is the type.
OSTRACION n.
A genus of plectognath fishes having the body covered with solid, immovable, bony plates. It includes the trunkfishes.
OSTRACIONT n.
A fish of the genus Ostracion and allied genera.
OSTRACISM n. 2 definitions
Banishment by popular vote, -- a means adopted at Athens to rid the city of a person whose talent and influence gave umbrage.
OSTRACITE n.
A fossil oyster.
OSTRACIZE v. 2 definitions
To exile by ostracism; to banish by a popular vote, as at Athens. Grote.
OSTRACODA n.
Ostracoidea.
OSTRACODERMI n.
A suborder of fishes of which Ostracion is the type.
OSTRACOID a. 2 definitions
Of or pertaining to the Ostracoidea. -- n.
OSTRACOIDEA n.
An order of Entomostraca possessing hard bivalve shells. They are of small size, and swim freely about. [Written also Ostracoda.]
OSTREA n.
A genus of bivalve Mollusca which includes the true oysters.
OSTREACEOUS a.
Of or pertaining to an oyster, or to a shell; shelly. The crustaceous or ostreaceous body. Cudworth.
OSTREACULTURE n.
The artificial cultivation of oysters.
OSTREOPHAGIST n.
One who feeds on oysters.
OSTRICH n.
A large bird of the genus Struthio, of which Struthio camelus of Africa is the best known species. It has long and very strong legs, adapted for rapid running; only two toes; a long neck, nearly bare of feathers; and short wings incapable of flight. The adult male is about eight feet high.
OSTRIFEROUS a.
Producing oysters; containing oysters.
OSTROGOTH n.
One of the Eastern Goths. See Goth.
OSTROGOTHIC a.
Of or pertaining to the Ostrogoths.
OSWEGO TEA n.
An American aromatic herb (Monarda didyma), with showy, bright red, labiate flowers.
A POSTERIORI n. 2 definitions
Characterizing that kind of reasoning which derives propositions from the observation of facts, or by generalizations from facts arrives at principles and definitions, or infers causes from effects. This is the reverse of a priori reasoning.
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