WordWeb Online

1. Of or relating to people whose gender identity is the same as their birth sex; not transgender
   - cisgender, cisgendered
    
2. (chemistry) having substituents on the same side of some plane in a molecule

1. An alliance made up of states that had been Soviet Socialist Republics in the Soviet Union prior to its dissolution in Dec 1991
   - Commonwealth of Independent States

1. A unit of radioactivity equal to the amount of a radioactive isotope that decays at the rate of 37,000,000,000 disintegrations per second
   - curie

Sounds like: si

Type of: global organisation [Brit], global organization, international organisation [Brit], international organization, radioactivity unit, world organisation [Brit], world organization

Encyclopedia: Cis,cis-Muconic acid