say it: pur-en-THET-i-kuh-lee
parenthetically is an adverb meaning "in a parenthetical manner". It carries one recorded sense.
in a parenthetical manner
“he added parenthetically that he would not attend the wedding ceremony”
Definitions, synonyms and semantic relations for parenthetically 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.