OOSPHERE

oosphere

(noun) a gamete; used especially of lower plants

Source: WordNet® 3.1


Etymology

Noun

oosphere (plural oospheres)

(botany) A large nonmotile egg cell formed in an oogonium and ready for fertilization

Source: Wiktionary


O"ö*sphere, n. Etym: [Gr. sphere.]

1. (Bot.)

Definition: An unfertilized, rounded mass of protoplasm, produced in an oögonium.

Note: After being fertilized by the access of antherozoids it becomes covered with a cell wall and develops into an oöspore, which may grow into a new plant like the parent.

2. (Bot.)

Definition: An analogous mass of protoplasm in the ovule of a flowering plant; an embryonic vesicle. Goodale.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

30 May 2025

FOREHAND

(noun) (sports) a return made with the palm of the hand facing the direction of the stroke (as in tennis or badminton or squash)


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