from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Alternative form of peristome.
from the GNU version of the Collaborative International Dictionary of English
- n. Same as peristome.
from The Century Dictionary and Cyclopedia
- n. In zoology, a peristome, in any sense.
Sorry, no etymologies found.
Epistoma - is: the lower face between the mouth and eyes: that sclerite immediately behind or above the labrum, whether it be clypeus or an intermediate piece: in Diptera, that part of the face between the front and the labrum; the oral margin and an indefinite space immediately contiguous thereto and so = peristoma: in Odonata; = clypeus: = hypostoma.
The astronomer who, by the aid of the heliometer or a double-refracting prism, * determines the diameter of planetary bodies; who measures patiently year after year, the meridian altitude and the relative distances of stars, or who seeks a telescopic comet in a group of nebulae, does not feel his imagination more excited -- and this is the very guarantee of the precision of his labors -- than the botanist who counts the divisions of the calyx, or the number of stamens in a flower, or examines the connected or the separate teeth of the peristoma surrounding the capsule of a moss.