nigrescence

Mid 19th century. From Latin nigrescens, present active participle of nigrescō.

• IPA^(key): /naɪˈɡrɛsəns/, /nɪˈɡrɛsəns/

nigrescence (countable and uncountable, plural nigrescences)

1. The process of becoming black or dark; blackening.
2. A dark complexion.
3. Blackishness.

• albescence (“becoming white”), cerulescence (“becoming blue”), erubescence (“becoming red”), flavescence (“becoming yellow”), virescence (“becoming green”)

• nigrescent