Meaning of the word trisomy in English

What does trisomy mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

trisomy

US /traɪˈsoʊ.mi/
UK /traɪˈsəʊ.mi/
"trisomy" picture

Noun

a condition in which an extra copy of a chromosome is present in the cell nuclei, causing developmental abnormalities

Example:
Down syndrome is the most common form of trisomy in humans.
The doctor explained that trisomy 18 can lead to severe health complications.