rostellum
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Related to rostellum: oncosphere, coracidium
ros·tel·lum
(rŏ-stĕl′əm)n. pl. ros·tel·la (rŏ-stĕl′ə)
A small beaklike part, such as a projection on the stigma of an orchid or the hooked projection on the head of a tapeworm.
[Latin, diminutive of rōstrum, beak; see rostrum.]
ros·tel′lar adj.
rostellum
(rɒˈstɛləm)n, pl -la (-lə)
(Biology) biology a small beaklike process, such as the hooked projection from the top of the head in tapeworms or the outgrowth from the stigma of an orchid
[C18: from Latin: a little beak, from rōstrum a beak]
rosˈtellate, rosˈtellar adj
ros•tel•lum
(rɒˈstɛl əm)n., pl. ros•tel•la (rɒˈstɛl ə)
1. any of various small, beaklike parts, as the mouth tube of sucking bugs or the hook-bearing projection of intestinal tapeworms.
2. a beaklike modified stigma of certain orchids that secretes a sticky fluid, enabling pollen grains to adhere to visiting insects.