1. Pertaining to or containing or consisting of semen
   "seminal fluid" 
2. Containing seeds of later development
   "seminal ideas of one discipline can influence the growth of another"
   - germinal, originative

See also: original, semen

• playroom
• playschool
• playscript
• playsuit
• plaything
• playtime
• playwright
• plaza
• plc
• plea
• plea bargaining
• plea of insanity
• plea-bargain
• pleach
• plead
• pleadable
• pleader
• pleading
• pleading in the alternative
• pleadingly
• pleasance
• pleasant
• Pleasant Island
• pleasant-smelling
• pleasant-tasting