Dictionary.com

jointworm

[ joint-wurm ]
/ ˈdʒɔɪntˌwɜrm /
Save This Word!

noun
the larva of any of several chalcid flies of the family Eurytomidae, especially of the genus Harmolita, that feeds within the stems of grasses, often causing a gall near the first joint.
QUIZ
SPRINT TO THE FINISH WITH THIS OLYMPICS QUIZ!
Compete in our Olympics quiz to see if you can take home the gold medal in Olympics knowledge.
Question 1 of 10
Where was the Olympics first held?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help
Also called strawworm.

Origin of jointworm

First recorded in 1700–10; joint + worm
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for jointworm

jointworm
/ (ˈdʒɔɪntˌwɜːm) /

noun
US the larva of chalcid flies of the genus Harmolita, esp H. tritici, which form galls on the stems of cereal plants
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
FEEDBACK