rec·trix (r k tr ks)n. pl. rec·tri·ces (r ktr-s z , rk-tr sz) One of the stiff main feathers of a bird's tail, used to control the direction of flight. [Latin r ctrx, feminine of rctor, director; see rector.] |
rectrix [ˈrɛktrɪks]
n pl rectrices [ˈrɛktrɪˌsiːz rɛkˈtraɪsiːz]
(Life Sciences & Allied Applications / Zoology) any of the large stiff feathers of a bird's tail, used in controlling the direction of flight
[from Late Latin, feminine of rector governor, rector]
rectricial [rɛkˈtrɪʃəl] adj
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