'Instar' definitions:

Definition of 'instar'

(from WordNet)
noun
An insect or other arthropod between molts

Definition of 'Instar'

From: GCIDE
  • Instar \In"star`\, n. a postembryonic stage of life of an arthropod, especially an insect, between two successive molts; also, the arthropod when in that stage of life. [PJC]

Definition of 'Instar'

From: GCIDE
  • Instar \In*star"\, v. t. To stud as with stars. [R.] "A golden throne instarred with gems." --J. Barlow. [1913 Webster]