Undifferentiated, nonspecialized embryonic tissue.
Disinterested vs. UninterestedIf a new movie stars an actor you can’t stand, are you disinterested or uninterested in paying to go see it on opening night? These two words are often used interchangeably, but not by grammarians in the know. Do know the difference between disinterested and uninterested? Disinterested has two meanings. The first and most widely accepted one is “impartial; unbiased by personal interest or advantage” …
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.