triploid

1 of 2

adjective

trip·​loid ˈtri-ˌplȯid 

: having or being a chromosome number three times the monoploid number

triploid noun

triploidy

ˈtri-ˌplȯi-dē 

noun

triploidy

2 of 2

noun

trip·​loi·​dy ˈtriˌplȯidē 

plural -es

: the state of being triploid

triploidy in higher animals is not common

—H. P. Riley

Examples of triploid in a Sentence

Recent Examples on the Web

Adjective

The resulting plants produce fruit whose triploid seeds are then planted to yield seedless watermelons. — Joshua Siskin, Oc Register, 7 May 2026

Andrew Dittman, a research fisheries biologist for Northwest Fisheries Science Center, said using triploid fish was a common and largely effective process for maintaining a sterile population. — Author: Evan Bush, Anchorage Daily News, 1 Nov. 2019

Triploid chromosomes can replicate for normal growth, but can’t make sperm or eggs3. — Nick Stockton, WIRED, 20 Nov. 2015

Word History

Etymology

Adjective

International Scientific Vocabulary, from Latin triplus triple

Noun

triploid + -y

First Known Use

Adjective

1911, in the meaning defined above

Medical Definition

triploid

1 of 2 adjective

trip·​loid ˈtrip-ˌlȯid 

: having or being a chromosome number three times the monoploid number

triploidy

-ˌlȯid-ē 

noun

plural triploidies

triploid

2 of 2 noun

: a triploid individual