combining form
or iso-
Etymology: Late Latin, from Greek, from isos equal
1. : equal : homogeneous : uniform
is energic
is acoustic
iso cephaly
iso type
2. usually iso-
a. : isomer of a (specified) compound
iso cyanuric acid C 3 (NH) 3 O 3
iso vanillin CH 3 OC 6 H 4 (OH)CHO
b.
(1) : of, relating to, or having a branched chain of carbon atoms
iso hydrocarbons
iso synthesis
— compare normal 10e
(2) : having a straight chain of carbon atoms to which one branching methyl group is attached in the position next to one end
iso hexyl (CH 3 ) 2 CHCH 2 CH 2 CH 2 −
3. usually iso- : for or from different individuals of the same species
iso antigen
iso antibody