Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
monotonic is an adjective meaning "of a sequence or function; consistently increasing and never decreasing or consistently decreasing and never increasing in value". It carries 2 recorded senses.
of a sequence or function; consistently increasing and never decreasing or consistently decreasing and never increasing in value
mathematics
sounded or spoken in a tone unvarying in pitch
“the owl's faint monotonous hooting”
Definitions, synonyms and semantic relations for monotonic come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.