subjoin

sub- +‎ join

• Rhymes: -ɔɪn

subjoin (third-person singular simple present subjoins, present participle subjoining, simple past and past participle subjoined)

1. To add something to the end; to append or annex
   • Mayhew

     We subjoin an engraving […] which will give the reader a far better notion of the structure than any verbal description could convey to the mind.

• underjoin

• subjoinder

subjoin (plural subjoins)

1. (databases) A subordinate or secondary join.