say it: PAHP-kawrn
popcorn is a noun meaning "corn having small ears and kernels that burst when exposed to dry heat". It carries 2 recorded senses.
corn having small ears and kernels that burst when exposed to dry heat
small kernels of corn exploded by heat
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 popcorn come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.