Definition of subnotation in US English:

subnotation

noun

  • A note or annotation added below something; the action or practice of annotating in this way.

Origin

Early 18th century (in an earlier sense). From post-classical Latin subnotation-, subnotatio signature, note, comment from classical Latin subnotāt-, past participial stem of subnotāre to sign (documents), to write down at the conclusion of a document, to mark particularly (from sub + notāre) + -iō.

Pronunciation

subnotation

/ˌsʌbnə(ʊ)ˈteɪʃn/