CITRIC
6 letters
Historical clue formulations
- ___ acid (part of lemons and oranges) — 2015-09-14
- Lemony, for example — 2014-03-07
- ___ acid — 2011-06-26
- Kind of acid — 2005-03-14
- Lemonlike — 2001-05-04
- Kind of acid — 2001-03-22
- Lemony, say — 1998-04-19