Phonetics. (of a speech sound) produced with the tongue articulating neither expressly forward nor in the back part of the mouth, as any of the sounds of lull.
7.
Physics. (of a force) directed to or from a fixed point.
in, at, of, from, containing, or forming the centre of something: the central street in a city; the central material of a golf ball
2.
main, principal, or chief; most important: the central cause of a problem
3.
a. of or relating to the central nervous system
b. of or relating to the centrum of a vertebra
4.
of, relating to, or denoting a vowel articulated with the tongue held in an intermediate position halfway between the positions for back and front vowels, as for the a of English soda
5.
(of a force) directed from or towards a point
6.
informal (immediately postpositive) used to describe a place where a specified thing, quality, etc is to be found in abundance: nostalgia central