Top 100 Languages by Population. These are the top 100 languages in order of number of first language speakers. This is from the 13th Edition of the Ethnologue (1996). More up-to-date information may well be avaliable. www.ethnologue.com is by far, the best language resource I've found on the web and much more detailed information about individual languages is avaliable there.
exploratory. 1  pertaining to or concerned with exploration: an exploratory operation. 2  inclined to make explorations.
ambulatory. 1  of, relating to, or capable of walking: an ambulatory exploration of the countryside. 2  adapted for walking, as the limbs of many animals. 3  moving about or from place to place; not stationary: an ambulatory tribe. 4  Also, ambulant. 5  Law. 6  Also called deambulatory.