annuluses

英 [ə'nʌljuːzɪz] 美 [ə'nʌljuːzɪz]

• n. 环带物(环形套筒；圆；圈)

英英释义

名词 annulus:

1. a toroidal shape

2. (Fungi) a remnant of the partial veil that in mature mushrooms surrounds the stem like a collar