sem·i·an·nu·al 
(sĕm′ē-ăny-əl, sĕm′ī-)
(sĕm′ē-ăny-əl, sĕm′ī-)adj.
Occurring or issued twice a year.
sem′i·annu·al·ly adv.
- propositional calculus
- propositional function
- propositionally
- propositus
- propound
- propounder
- propoxyphene
- propraetor
- propraetorial
- propraetorian
- propranolol
- propria
- proprietarily
- proprietary
- proprietary colony
- proprietor
- proprietorial
- proprietorially
- proprietorship
- proprietress
- propriety
- proprioception
- proprioceptive
- proprioceptor
- proprium