'meatiness' originates from English, specifically formed from the adjective 'meaty' (itself from 'meat') plus the suffix '-ness'. 'meat' comes from Old English 'mete', where the root meant 'food'.

'meatiness' developed by adding the adjectival suffix '-y' to Middle English 'meat' to form 'meaty', and then adding the noun-forming suffix '-ness' in later English to create 'meatiness'. The element 'meat' traces back to Old English 'mete' and Proto-Germanic roots meaning 'food'.

Initially related directly to the presence or amount of meat ('fleshiness' or 'food content'), the term later acquired a broader, figurative sense meaning 'substantialness' or 'richness' in non-literal contexts.