isograft

noun

iso·graft ˈī-sə-ˌgraft

: a homograft between genetically identical or nearly identical individuals

isograft transitive verb

Word History

First Known Use

1958, in the meaning defined above

Time Traveler

The first known use of isograft was in 1958

See more words from the same year

Browse Nearby Words

isogonism

isograft

isogram

See all Nearby Words

Cite this Entry

Style

“Isograft.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/isograft. Accessed 31 Oct. 2025.

Copy Citation

Medical Definition

isograft

noun

iso·graft ˈī-sə-ˌgraft

: a homograft between genetically identical or nearly identical individuals

isograft transitive verb

More from Merriam-Webster

Word of the Day

hobgoblin

Listen to the pronunciation of hobgoblin

See Definitions and Examples »

Get Word of the Day daily email!

Popular in Grammar & Usage

'Affect' vs. 'Effect'

Using Bullet Points ( • )

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

The Difference Between 'i.e.' and 'e.g.'

What’s the difference between ‘cemetery’ and ‘graveyard’?

Popular in Wordplay

Skibidi, Mog & More: Gen Alpha Slang

13 Wonderful Words That You're Not Using (Yet)

Ten More Words from Taylor Swift Songs

Why do we 'bury the lede?'

'Za' and 9 Other Words to Help You Win at SCRABBLE

Popular

'Affect' vs. 'Effect'

Skibidi, Mog & More: Gen Alpha Slang

13 Wonderful Words That You're Not Using (Yet)