n.
Pronunciation: ˌ re-t ə -n ō - ˌ blas- ' t ō -m ə
Function: noun
Inflected Form: plural -mas also -ma · ta \ -m ə -t ə \
Etymology: New Latin, from retin- + blast- + -oma
Date: 1924
: a malignant tumor of the retina that develops during childhood, is derived from retinal germ cells, and is associated with a chromosomal abnormality