Meanings

reverse transcriptase

inverse

a child dying before its parents

retroactive inhibition

upside-down jellyfish (Cassiopea ornata)

reverse osmosis membrane

retrograde amnesia

regaining the lead

gastroesophageal reflux disease

vice versa

reverse auction

inverse mapping

reverse sexual harassment

inverse element

reverse discrimination

no matter how hard one might try

inverted position (tarot card, etc.)

reading a word backwards (often to make slang)

reverse transcription polymerase chain reaction

reciprocal lattice (crystallography)