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Webster’s Dictionary (1828)

98,828 entries. Headwords are matched first, then definition text.

22 words match “HYDROIDEA”

HYDROIDEA n.
An extensive order of Hydrozoa or Acalephæ. [Written also Hydroida.]
ATHECATA n.
A division of Hydroidea in which the zooids are naked, or not inclosed in a capsule. See Tubularian.
BLASTOSTYLE n.
ain hydroids, an imperfect zooid, whose special function is to produce medusoid buds. See Hydroidea, and Athecata.
BUDDING n.
aining attached to the parent stalk or cell, at other times becoming free; gemmation. See Hydroidea.
COENOSARC n.
The common soft tissue which unites the polyps of a compound hydroid. See Hydroidea.
CRASPEDOTA n.
The hydroid or naked-eyed medusæ. See Hydroidea.
GONOPHORE n.
upon a hydroid, sometimes becoming a free hydromedusa, sometimes remaining attached. See Hydroidea, and Illusts. of Athecata, Campanularian, and Gonosome.
GONOTHECA n.
medusoid buds or gonophores are developed; -- called also gonangium, and teleophore. See Hydroidea, and Illust. of Campanularian.
GONOZOOID n.
A sexual zooid, or medusoid bud of a hydroid; a gonophore. See Hydroidea, and Illust. of Campanularian.
GYMNOCHROA n.
A division of Hydroidea including the hydra. See Hydra.
HYDRANTH n.
id colony. Also applied to the proboscis or manubrium of a hydroid medusa. See Illust. of Hydroidea.
HYDROCAULUS n.
The hollow stem of a hydroid, either simple or branched. See Illust. of Gymnoblastea and Hydroidea.
HYDROCORALLIA n.
A division of Hydroidea, including those genera that secrete a stony coral, as Millepora and Stylaster. Two forms of zooids in life project from small pores in the coral and resemble those of other hydroids. See Millepora.
HYDROID a. 2 definitions
Related to, or resembling, the hydra; of or pertaining to the Hydroidea. -- n.
HYDROPHORA n.
The Hydroidea.
HYDRORHIZA n.
tock or decumbent stem by which a hydroid is attached to other objects. See Illust. under Hydroidea.
HYDROTHECA n.
One of the calicles which, in some Hydroidea (Thecaphora), protect the hydrants. See Illust. of Hydroidea, and Campanularian.
HYDROZOA n.
The Acalephæ; one of the classes of coelenterates, including the Hydroidea, Discophora, and Siphonophora.
STOLON n.
zooids usually remain united by the stolons. Such stolons are often present in Anthozoa, Hydroidea, Bryozoa, and social ascidians. See Illust. under Scyphistoma.
THECOPHORA n.
The campanularians and sertularians are examples. Called also Thecata. See Illust. under Hydroidea.
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