tr.v., -fixed, -fix·ing, -fix·es.
- To fix in the mind; instill.
- Linguistics. To insert (a morphological element) into the body of a word.
An inflectional or derivational element appearing in the body of a word. For example, in Tagalog, the active verb sulat "write" can be converted to a passive, "written," by inserting the infix -in-, yielding sinulat.
[Back-formation from Middle English infixed, stuck in, from Latin īnfīxus, past participle of īnfīgere, to fasten in : in-, in; see in-2 + fīgere, to fasten.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.