Planning a first-time trip to the Phoenix area and would like advice about the best time to visit with regard to the weather. I want to enjoy sitting by the pool, swimming, etc, as well as do some hiking and typical tourist things. However, I would prefer to avoid the extreme heat. Hide.
Medical Definition of aerobics. 1  1singular or plural in construction : a system of physical conditioning involving exercises (as running, walking, swimming, or calisthenics) strenuously performed so as to cause marked temporary increase in respiration and heart rate. 2  2: aerobic exercises.
Search also in: Web News Encyclopedia Images. aerobic adj 1 (of an organism or process) depending on free oxygen or air 2 of or relating to aerobes 3 designed for or relating to aerobics aerobic shoes, aerobic dances (Compare) â anaerobic. English Collins Dictionary-English Definition & Thesaurus &nbsp. See also: aerobics, aerobatic, aerobatics, aerobicist. Add your entry in the Collaborative Dictionary.