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say it: sahd
sod is a noun and verb meaning "surface layer of ground containing a mat of grass and grass roots". It is pronounced /ˈsɑd/ — sahd. It carries 5 recorded senses.
surface layer of ground containing a mat of grass and grass roots
an enzyme that catalyzes the conversion of superoxide into hydrogen peroxide and oxygen
“oxygen free radicals are normally removed in our bodies by the superoxide dismutase enzymes”
cover with sod
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 sod 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.