To make excessive usage of TLAs in written communication (especially IM and text message), in order to reduce the number of key strokes required to express oneself.
A contraction of "acronym" and "economise".
"I do acronomise heavily, but that's a function of my laziness, not wishing to type things like 'laugh out loud' in full all the time."
'Twould've been different to differntially remain same being met by haughty exiting limo in disdain taking foolish pride in a shoelace honestly done seeming though refusing friendship for acrynomous gain.