say it: STEP-bee-step
step-by-step is an adjective meaning "one thing at a time". It is pronounced /ˈstɛpbiˌstɛp/ — STEP-bee-step. It carries one recorded sense.
one thing at a time
Definitions, synonyms and semantic relations for step-by-step 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.