Deprotonate

Part of speech: verb

Definitions

1. To remove a proton from a molecule or ion, typically in a chemical reaction where an acid donates a hydrogen ion; to cause loss of hydrogen cation from a species; to convert a compound by stripping a proton to form its conjugate base
2. The process of extracting a hydrogen ion from a chemical entity, often resulting in a negatively charged species; inducing the departure of a proton from a molecule; transforming an acid into its conjugate base through proton removal
3. Acting to detach a proton from a molecular structure, especially during acid-base interactions; eliminating a hydrogen ion from a compound; altering the chemical state by removing a proton to generate the deprotonated form

Etymology: Deprotonate is a modern chemist's coinage, built by stacking a prefix onto a word that was itself built from Greek. The base, protonate, rests on "proton," which comes from the Ancient Greek "prôton," meaning "first," a name reflecting the hydrogen nucleus's status as the simplest positive particle. Chemists then added the Latin prefix "de-," meaning "removal" or "reversal," to describe taking that proton away. The Latin prefix "de-" carries the same sense of undoing that appears in words like "decode" or "deforest." So the term literally describes reversing a protonation: a molecule that had gained a hydrogen ion is stripped of it again. The word is a plain technical formation rather than one with a dramatic story, and its meaning has stayed fixed to that chemical sense.

Synonyms: remove proton, ionize, dissociate

Antonyms: protonate, add proton