Cryp´to-gams [Gr. kryptos, hidden; gamos, marriage.] The lower of the two great subdivisions of the plant kingdom. They have no true flowers containing stamens, pistils, and seeds; they propagate by means of spores.
Cten-oph´o-ra [Gr. kteis, comb; phero, bear.] A subdivision of cœlenterates with paddle-like locomotive plates arranged in eight meridional rows on the outer surface of the body.
Cyc-a-da´ce-æ [Gr. kykos, African coco-palm.] The cycad family of plants (gymnospermous), of fern-like or palm-like aspect.
Cys-toi´de-a [Gr. kystis, bladder; eidos, form.]
Cy-no-ceph´a-lus [Gr. kyon, dog; kephale, head.]
Cy´to-plasm [Gr. kyo, be pregnant; plasma, < plasso, form.] Protoplasm; especially that portion of a cell apart from the nucleus.
Dal´ton-ism [Dalton, chemist, who had color-blindness.] Color-blindness, especially red-blindness.
De-cid´u-ate [Lat. deciduus, falling off.] Shed at periodic times.
Des´mids [Gr. desmos, band.] Unicellular plants of minute size; bright-green in color; mainly solitary, fresh-water algæ.
Dev-o´ni-an [Devonshire, England.] The name given by Murchison to Palæozoic rocks in Devonshire, England.