An arthropod at a specified one of these stages of development.
2005, Nematodes as biocontrol agents (edited by Parwinder S. Grewal, Ralf-Udo Ehlers, David I. Shapiro-Ilan), page 133:
In A. orientalis, first and second instars were more susceptible than third instars to H. bacteriophora TF strain, (..)
puhekieltä A stage in development.
1955, Vladimir Nabokov, Lolita:
We avoided Tourist Homes, country cousins of Funeral ones, old-fashioned, genteel and showerless, with elaborate dressing tables in depressingly white-and-pink little bedrooms, and photographs of the landlady’s children in all their instars.
1882, Frederick Randolph Abbe, The temple rebuilt: a poem, page 125:
Yet mark with shining steps the humbler way;
And, as angelic feet instar the sky,
Drop the bright sparks along the wilderness.
1893, in The Atlantic Monthly, volume 72, page 507:
Espey could distinguish through the clear darkness the fringed branches of a pine-tree clinging to the heights above and waving against the instarred sky, and below a vague moving whiteness (..)
1896, Mary Noailles Murfree (pseudonym Charles Egbert Craddock) In the Tennessee mountains, edition 14, page 209:
He was dreaming, surely; or were those deep, instarred eyes really fixed upon him with that wistful gaze which he had seen only twice before?