1On this side of; on the side nearer to the speaker.‘cisatlantic’
- ‘It is definitely one of the premier geological wonders of cislunar space.’
- ‘The waters of cis-equatorial seas.’
- ‘The generally accepted cis-oceanic ideas.’
- 1.1historical On the side nearer to Rome.
- 1.2(of time) closer to the present.‘cis-Elizabethan’
- ‘I place him confidently not a trans-, but cis-reformation-man.’
2Referring or relating to people whose sense of personal identity and gender corresponds with their birth sex.Compare with trans- (sense 3)‘cisgender’
Denoting molecules with cis arrangements of substituents.‘cis-1,2-dichloroethene’
- ‘Full X-ray crystallographic data were published (or deposited) for some of the isomerizing cis- or trans-cinnamic acids.’
- ‘Analogous to other fruits, cis-neurosporene, neurosporene, carotene, and cis- carotene were also present among the visible light-absorbing compounds.’
- ‘Similar effects were seen with 13 - cis-retinoic acid.’
- ‘Trans-fatty acids raise LDL cholesterol levels and lower HDL cholesterol levels relative to cis-unsaturated fatty acids and may increase the risk of diabetes.’
- ‘This enzyme inserts a cis-double bond at carbon 9.’
From Latin cis ‘on this side of’.