Definition of insertion
1 : something that is inserted: such as
a : the part of a muscle that inserts
b : the mode or place of attachment of an organ or part
c : embroidery or needlework inserted as ornament between two pieces of fabric
d : a section of genetic material that is inserted into an existing gene sequence
2a : the act or process of inserting
b : the mutational process producing a genetic insertion
Keep scrolling for more
Keep scrolling for more
Keep scrolling for more
Keep scrolling for more
Test Your Vocabulary
Words of Snow and Ice Quiz
- Which of the following refers to thin, bending ice, or to the act of running over such ice?

Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
Anagram puzzles meet word search.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Words of Snow and Ice Quiz
A selection of words from the chillier parts of t...
Take the quizName that Thing: Toys and Games Edition
It's all fun and games until someone beats your h...
Take the quizTrue or False?
Test your knowledge - and maybe learn something a...
Take the quizSCRABBLE® Sprint
SCRABBLE® fans, sharpen your skills!
Play the game
Share insertion
Time Traveler for insertion
The first known use of insertion was in 1539
See more words from the same year