Category:Trachea

Tra"che*a, n.; pl. Tracheæ. Etym: [nl.,from l. trachia, gr. trachei^a (sc. trachée.]

1. (anat.)

Defn: the windpipe. See illust. of lung.

2. (zoöl.)

Defn: one of the respiratory tubes of insects and arachnids.

3. (bot.)

Defn: one of the large cells in woody tissue which have spiral, Annular, or other markings, and are connected longitudinally so as to Form continuous ducts.