Origin of adult
Examples from the Web for subadult
Historical Examples of subadult
Only one, no. 136358, a subadult, is accompanied by a skull.
It is a subadult female, skull and skin, from North America.
A similar figure for 72 subadult and adult females was 133 feet.
Unfortunately, all but one skull, that of a subadult female, were destroyed in the field.Mammals from Tamaulipas, Mexico
Rollin H. Baker
Evidently, these glands are associated with sexual maturity in males because neither Sanborn nor I found them in subadult males.Systematics of Megachiropteran Bats in the Solomon Islands
Carleton J. Phillips
Word Origin for adult
"adult person," 1650s, from adult (adj.).
1530s (but not common until mid-17c.), from Latin adultus "grown up, mature, adult, ripe," past participle of adolescere "grow up, mature" (see adolescent). As a euphemism for "pornographic," it dates to 1958 and does no honor to the word.