tri·fec·ta 
(trī-fĕktə)
(trī-fĕktə)n.
1. A system of betting in which the bettor must pick the first three winners in the correct sequence. Also called triple.
2. A set or combination of three things: "the media's portrayal of the moral trifecta of sex, violence, and profanity" (Gregory Stevenson).
[TRI- + (PER)FECTA.]
- semiautomated
- semiautomatic
- semi-automatic
- semiautonomous
- semiautonomously
- semiautonomy
- semibold
- semibreve
- semicentennial
- semicircle
- semicircular
- semicircular canal
- semicivilized
- semiclassical
- semicolon
- semicoma
- semicomatose
- semiconducting
- semiconductor
- semiconductor diode
- semiconductor laser
- semiconscious
- semiconsciously
- semiconsciousness
- semiconservative replication