the ninth month of the year, consisting of 30 days
WordReference Random House Learner's Dictionary of American English © 2025
Sep•tem•ber /sɛpˈtɛmbɚ/USA pronunciation
n. [proper noun]
WordReference Random House Unabridged Dictionary of American English © 2025- the ninth month of the year, containing 30 days. Abbr.: Sept.,Sep.
Sep•tem•ber
(sep tem′bər),USA pronunciation n.
Sep•tem•bral
(sep tem′brəl),USA pronunciation adj.
- the ninth month of the year, containing 30 days. Abbr.: Sept., Sep.
- Latin September seventh month in the early Roman calendar; for formation see December
- bef. 1050; Middle English Septembre, Old English
Collins Concise English Dictionary © HarperCollins Publishers::
'September' also found in these entries (note: many are not synonyms or translations):
Brest
- Continental Congress
- Eleusinian mysteries
- Fructidor
- Labor Day
- Labour Day
- Michaelmas
- Munich Pact
- Navaratri
- October
- Pentagon
- S, s
- SEP
- Salerno
- Sept
- September Massacre
- Septembrist
- Star-Spangled Banner, The
- Tishri
- Tokyo
- Utopia Planitia
- Vendémiaire
- Virgo
- Volgograd
- World War II
- academic year
- autumn
- equinox
- feast
- hunter's moon
- last
- libra
- market garden
- nine-eleven
- pitching rotation
- sept
- spring
- summer
- target