instar

noun
in·​star | \ ˈin-ˌstär How to pronounce instar (audio) \

Definition of instar

: a stage in the life of an arthropod (such as an insect) between two successive molts also : an individual in a specified instar

Examples of instar in a Sentence

Recent Examples on the Web The fourth instar of the insect is bright red with black and white markings, Indiana DNR officials said. Sarah Brookbank, The Enquirer, 27 July 2021 After shedding their final instar, insects that experience complete metamorphosis become pupae. Liz Langley, National Geographic, 11 Aug. 2020 Each stage of molting is called an instar, and some insects molt up to five times before moving onto the next stage. Liz Langley, National Geographic, 11 Aug. 2020 There are five instars (that is, stages of development resulting in skin shedding) of the nymphs. Margaret Lauterbach, idahostatesman, 26 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'instar.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of instar

1895, in the meaning defined above

History and Etymology for instar

New Latin, from Latin, equivalent

Learn More About instar

Statistics for instar

Cite this Entry

“Instar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/instar. Accessed 3 Dec. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for instar

instar

noun
in·​star | \ ˈin-ˌstär How to pronounce instar (audio) \

Medical Definition of instar

: a stage in the life of an arthropod (as an insect) between two successive molts also : an individual in a specified instar

More from Merriam-Webster on instar

Britannica English: Translation of instar for Arabic Speakers

Britannica.com: Encyclopedia article about instar

WORD OF THE DAY

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!