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Transgender: Several trans leaders spoke at the rally.
[Short for transgender.]
1. a prefix meaning “across,” “through,” occurring orig. in loanwords from Latin, used in particular to form verbs denoting movement or conveyance from place to place (transfer; transmit; transplant) or complete change (transform; transmute), or to form adjectives meaning “crossing,” “on the other side of,” or “going beyond” the place named (transmontane; transnational; trans-Siberian).
2. a prefix used in the names of chemical compounds that are geometric isomers having two identical atoms or groups attached on opposite sides of a molecule divided by a given plane of symmetry. Compare cis- (def. 2).
[< Latin, prefixal use of trāns (preposition) across, through]
2. =translated → trad.