oncoming

UK: /ˈɒnkʌmɪŋ/ US: /ˈɑnˌkʌmɪŋ, ˈɔn-/ ,(on′kum′ing, ôn′-)

WordReference Random House Learner's Dictionary of American English © 2025

on•com•ing /ˈɑnˌkʌmɪŋ, ˈɔn-/   adj. [before a noun]

1. approaching;
   nearing:
   an oncoming train.
2. emerging:
   the oncoming generation.

WordReference Random House Unabridged Dictionary of American English © 2025

on•com•ing  (on′kum′ing, ôn′-), adj. 

1. approaching;
   nearing:
   the oncoming train; the oncoming holiday season.
2. emerging:
   the oncoming generation of leaders.

n. 

3. approach;
   onset:
   the oncoming of winter.

• on + coming, after verb, verbal phrase come on 1835–45

Collins Concise English Dictionary © HarperCollins Publishers::

oncoming / ˈɒnˌkʌmɪŋ/ adjective

1. coming nearer in space or time; approaching

noun

1. Also (rare): oncome the approach or onset: the oncoming of winter