FRUSTULE
Source: 567
Frus″tule (?), n. [[L. frustulum, dim. fr. frustum a piece: cf. F. frustule.]] (Bot.) The siliceous shell of a diatom. It is composed of two valves, one overlapping the other, like a pill box and its cover.
Source: 567
Frus″tule (?), n. [[L. frustulum, dim. fr. frustum a piece: cf. F. frustule.]] (Bot.) The siliceous shell of a diatom. It is composed of two valves, one overlapping the other, like a pill box and its cover.