expanding

CIDE DICTIONARY

expanding, a. 

 That expands, or may be expanded; extending; spreading; enlarging.  [1913 Webster]

Expanding bit, Expanding drill (Mech.), a bit or drill made adjustable for holes of various sizes; one which can be expanded in diameter while boring. -- Expanding pulley (Mach.), a pulley so made, as in sections, that its diameter can be increased or diminished.

THESAURUS

expanding

amplifying, crescendoing, crescent, developmental, dilatative, dilative, enlarging, expatiating, growing, increasing, incremental, intensifying, lengthening, multiplying, on the increase, proliferating, snowballing, spreading, swelling, tightening, waxing