Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
ecf is a noun meaning "liquid containing proteins and electrolytes including the liquid in blood plasma and interstitial fluid". It carries one recorded sense.
liquid containing proteins and electrolytes including the liquid in blood plasma and interstitial fluid
“the body normally has about 15 quarts of extracellular fluid”
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 ecf come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.