prefix
or sym-
Etymology: syn- from Middle English sin-, syn-, from Old French, from Latin syn-, from Greek, from syn with, together with, by means of, at the same time as, alteration of xyn; sym- from Middle English sim-, sym-, from Middle French, from Latin sym-, from Greek, from syn-
1. : with : along with : together
syn cline
syn genesis
2. : at the same time
syn anthesis
3. syn- : cis- 3 — used especially of chemical structures in which the atoms or groups on the same side of the molecule are attached to carbon-to-nitrogen or nitrogen-to-nitrogen double bonds
sodium syn benzene-diazoate
— opposed to anti- (sense 7); see benzaldoxime
4. : like : associated
syn type