Medical Definition of trans
1: characterized by or having certain groups of atoms on opposite sides of the longitudinal axis of a double bond or of the plane of a ring in a molecule—see all-trans
2: relating to or being an arrangement of two very closely linked genes in the heterozygous condition in which one mutant allele and one wild-type allele are on each of the two homologous chromosomes—compare cis 2
Medical Definition of trans-
1: through <transcutaneous>
2: so or such as to change or transfer <transamination>
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