having the power of producing; generative; creative

a productive effort.

producing readily or abundantly; fertile

a productive vineyard.

causing; bringing about (usually fol. by of )

conditions productive of crime and sin.

Economics . producing or tending to produce goods and services having exchange value.

Grammar . (of derivational affixes or patterns) readily used in forming new words, as the suffix -ness.

(in language learning) of or pertaining to the language skills of speaking and writing ( opposed to receptive ).

noun

fecundity , fruitfulness , productivity , prolificacy , prolificness , richness