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单词 θ23821
释义
the world > plants > particular plants > algae > [noun] > diatom(s) > part of (5)
frustule1857

The siliceous two-valved shell of a diatom, with its contents.

auxospore1884

A spore formed in diatoms by the union of two cells or by the excessive growth of an individual cell. Also, the resting-spore of the diatoms.

hoop1884

Botany. Applied to the overlapping edge of one of the valves of the frustule of the Diatomaceæ; called also the ‘girdle’.

vitta1888

Botany. One of a number of internal projections occurring in the valves of diatomaceous plants.

testule1891

The silicified crust or shell of a diatom: more usually called frustule, n.

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