sē Copy link Outline 1. Prep., v. sine init.—2. Prep. insepar.a. For sine, without; e. g. securus .— ...b. Aside, by itself; as sepono, to lay aside. ...3. sē = semi, half; as selibra, semodius.— ...4. sē = sex; as semestris. • sē (sēd). 1. Prep., v. sine init.— 2. Prep. insepar. a. For sine, without; e. g. securus (= sine curā).— b. Aside, by itself; as sepono, to lay aside.— 3. sē = semi, half; as selibra, semodius.— 4. sē = sex; as semestris.