Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
copperplate is a noun meaning "a graceful style of handwriting based on the writing used on copperplate engravings". It carries 3 recorded senses.
a graceful style of handwriting based on the writing used on copperplate engravings
a print made from an engraved copperplate
an engraving consisting of a smooth plate of copper that has been etched or engraved
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 copperplate come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.