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ad·join

(ə-join)

v. ad·joined, ad·join·ing, ad·joins

v.tr.

1. To be next to; be contiguous to: property that adjoins ours.

2. To attach: "I do adjoin a copy of the letter that I have received" (John Fowles).

v.intr.

To be contiguous.

[Middle English ajoinen, from Old French ajoindre, ajoin-, from Latin adiungere, to join to : ad-, ad- + iungere, to join; see yeug- in the Appendix of Indo-European roots.]

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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