Defn: Noble. [Obs.]
ETHENE
Eth"ene, n. (Chem.)
Defn: Ethylene; olefiant gas.
ETHENIC
E*then"ic, a. (Chem.)
Defn: Pertaining to, derived from. or resembling, ethene or ethylene; as, ethenic ether.
ETHENYL Eth"e*nyl, n. Etym: [Ethene + -yl.] (Chem.) (a) A trivalent hydrocarbon radical, CH3.C. (b) A univalent hydrocarbon radical of the ethylene series, CH2:CH; - - called also vinyl. See Vinyl.
ETHEOSTOMOID
E`the*os"to*moid, a. Etym: [NL. etheostoma name of a genus + -oid.]
(Zoöl.)
Defn: Pertaining to, or like, the genus Etheostoma.
— n.
Defn: Any fish of the genus Etheostoma and related genera, allied to the perches; — also called darter. The etheostomoids are small and often bright-colored fishes inhabiting the fresh waters of North America. About seventy species are known. See Darter.
ETHER
E"ther, n. Etym: [L. aether, Gr. idh, indh, and prob. to E. idle: cf.
F. éther.] [Written also æther.]