say it: BIL-duhp
buildup is a noun meaning "the act of building up an accumulation". It carries 3 recorded senses.
the act of building up an accumulation
“I envied his rapid buildup of assets”
“a military buildup in preparation for the invasion”
the result of the process of accumulation
“the buildup of leaves blocked the drain pipes”
highly favorable publicity and praise
“his letter of recommendation gave her a terrific buildup”
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 buildup 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.