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development

1756, "an unfolding;" see develop + -ment. Of property, with the sense "bringing out the latent possibilities," from 1885. Meaning "state of economic advancement" is from 1902.
property

c.1300, "nature, quality," later "possession" (a sense rare before 17c.) ... lit. "special character" (a loan-translation of Gk.idioma), noun of quality from proprius "one's own, special" (see proper).