Merriam-Webster's Collegiate® Dictionary, 11th Edition
MATURE
I. adjective (maturer; -est)
Etymology: Middle English, from Latin maturus ripe; akin to Latin mane in the morning, manus good
Date: 15th century
based on slow careful consideration ,
2. a. having completed natural growth and development ; ripe , having undergone maturation, having attained a final or desired state , having achieved a low but stable growth rate , of, relating to, or being an older adult ; elderly ,
3. of or relating to a condition of full development, characteristic of or suitable to a mature individual , due for payment , belonging to the middle portion of a cycle of erosion, maturely adverb
II. verb (matured; maturing)
Date: 15th century
transitive verb to bring to maturity or completion, intransitive verb to become fully developed or ripe, to become due