millisecond is a valid English word

Scrabble validity: valid ( international - Sowpods, US - Twl06 )
iScramble validity: valid
QuickWords validity: valid

Meanings

Noun (COUNTABLE)

One one-thousandth of a second. Symbol: ms.
• The suggestion that pulsars were rotating neutron stars was put forth independently by Thomas Gold and Franco Pacini in 1968, and was soon proven beyond reasonable doubt by the discovery of a pulsar with a very short (33-millisecond) pulse period in the Crab nebula.^W

millisecond is a Scrabble valid word

m3i1l1l1i1s1e1c3o1n1d2

• International English (Sowpods) - The word is valid in Scrabble ✔
• US English (TWL06) - The word is valid in Scrabble ✔
• 16 points

millisecond is an iScramble, QuickWords valid word

m1i2l3l4i5s6e7c8o9n10d11

• The word is valid in iScramble ✔
• The word is valid in QuickWords ✔
• 66 points

Same letters words (Anagrams)

• LIMNOSCELID

Same letters plus one

• LIMNOSCELIDS
• MILLISECONDS

Same letters minus one

• CELLOIDINS
• COLLIDINES
• DECILLIONS