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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."
by blues x man December 08, 2005
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