Annex, v. t. [imp. & p. p. Annexed; p. pr. & vb. n. Annexing.]
Etymology: [F. annexer, fr. L. annexus, p. p. of annectere to tie or bind to; ad + nectere to tie, to fasten together, akin to Skr. nah to bind.]
1. To join or attach; usually to subjoin; to affix; to append; -- followed by to. "He annexed a codicil to a will." Johnson.
2. To join or add, as a smaller thing to a greater. He annexed a province to his kingdom. Johnson.
3. To attach or connect, as a consequence, condition, etc.; as, to annex a penalty to a prohibition, or punishment to guilt.
Syn. -- To add; append; affix; unite; coalesce. See Add.
2 other Webster entries under this spelling
Annex, v. i.
To join; to be united. Tooke.
Annex, n.
Something annexed or appended; as, an additional stipulation to a writing, a subsidiary building to a main building; a wing.
Shades of meaning
Fernald has no entry of its own for annex; he lists it under add.
Where he writes about it:
We may enlarge a house, a farm, or an empire, extend influence or dominion, augment riches, power or influence, attach or annex a building to one that it adjoins or papers to the document they refer to, annex a clause or a codicil, affix a seal or a signature, annex a territory, attach a condition to a promise. — from add