PICOSECOND /ˈpiː.kəʊˌsɛk.ənd/ Scrabble 17 Words With Friends 21 Definition noun one trillionth (10^-12) of a second. Anagrams of PICOSECOND endoscopic See all 308 words you can make from PICOSECOND → 10-letter words Words starting with P Words ending with D ← Unscramble different letters