ˈtestule Bot.
[ad. L. testula, dim. of testa shell.]
The silicified crust or shell of a diatom: more usually called frustule.
| 1891 in Cent. Dict. |
ˈtestule Bot.
[ad. L. testula, dim. of testa shell.]
The silicified crust or shell of a diatom: more usually called frustule.
| 1891 in Cent. Dict. |
Oxford English Dictionary