Noun
Verb (する, transitive)
1. fixing (in place); being fixed (in place); securing; anchoring; fastening down
あそこは机が固定されていて動かせないんです。The desk there is fixed in place and cannot be moved.
2. fixing (e.g. salary, capital); keeping the same
家賃は二年間固定されている。The rent is fixed for two years.
3. fixation (histology)
Noun
Internet slang
Abbreviation
4. user name (on an online forum like 2ch where the majority of users post anonymously)
5. user of an online handle (instead of posting anonymously)