Meso
Pronunciation
- IPA: en, /?me??so?/
Origin
Full definition of meso
Adjective
meso
- (chemistry, dated, proscribed) Of a tactic diad, having structural units in identical orientation.
Usage notes
As the adjectives "racemic" and "nonracemic" apply to whole molecules, not structural units, the coordinate term "racemo" was considered misleadingly imprecise, and "racemo" and "meso" were formally proscribed in 2019; modern usage is to write just "m", formerly an abbreviation for "meso".