Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
superficies is a noun meaning "the purely external aspect of a thing; superficial appearance". It carries 2 recorded senses.
the purely external aspect of a thing; superficial appearance
“the audience was held by the substance of the play rather than by the superficies of the production”
plural
outer surface of an area or a body
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for superficies come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.