a. Tending to recede or regress; yielding; secluded. Also: (of people) retiring, reserved.
b. Phonetics. Of an accent: falling near or on the first syllable of a word.
c. Of a language or linguistic feature: falling into disuse; obsolescent, moribund.
2. Biology. Of a gene, allele, or hereditary trait: perceptibly expressed only when inherited from both parents, i.e. in homozygotes, being masked in heterozygotes by a dominant allele or trait (also with to the dominant allele or trait). Also: (of an organism) expressing such a trait.
An individual in which a particular recessive allele is expressed; a recessive allele or trait.
► indicates date of composition for this text (as opposed to date of documentary evidence). More