Definition of subingression in English:

subingression

noun

rare
  • Subtle or unobserved entrance. Also: an instance of this; (in later use concrete) a secret or hidden entrance.

Origin

Mid 17th century; earliest use found in Walter Charleton (1620–1707), physician and natural philosopher. From sub- + ingression.

Pronunciation

subingression

/(ˌ)sʌbɪnˈɡrɛʃn//(ˌ)sʌbɪŋˈɡrɛʃn/