join

Etymology

From Middle English joinen, joynen, joignen, from Old French joindre, juindre, jungre, from Latin iungō (“join, yoke”, verb), from Proto-Indo-European *yewg- (“to join, unite”). Cognate with Old English iucian, iugian, ġeocian, ġyċċan (“to join; yoke”). More at yoke.

noun

1. An act of joining">joining or the state of being joined; a junction or joining">joining.
   We found 217 putative interchromosomal joins. Only one of these joins (in the paternal assembly of HG02080) was located in a euchromatic, non-acrocentric region and was manually confirmed to be a misassembly. 2023-05-11, Wen-Wei LiaoMobin AsriJana Ebleret al., “A draft human pangenome reference”, in Nature, volume 617, →DOI, page 313
2. An intersection of piping or wiring; an interconnect.
3. (computing, databases) An intersection of data in two or more database tables.
4. (computing) The act of joining something, such as a network.
   The offline domain join is a three-step process described subsequently: […] 2010, Dustin Hannifin, Microsoft Windows Server 2008 R2 Administrator's Reference
5. (algebra) The lowest upper bound, an operation between pairs of elements in a lattice, denoted by the symbol ∨.

verb

1. (transitive) To connect or combine into one; to put together.
   The plumber joined the two ends of the broken pipe.
   We joined our efforts to get an even better result.
2. (intransitive) To come together; to meet.
   Parallel lines never join.
   These two rivers join in about 80 miles.
3. (intransitive) To enter into association or alliance, to unite in a common purpose.
4. (transitive) To come into the company of.
   I will join you watching the football game as soon as I have finished my work.
5. (transitive) To become a member of.
   Many children join a sports club.
   Most politicians have joined a party.
6. (computing, databases, transitive) To produce an intersection of data in two or more database tables.
   By joining the Customer table on the Product table, we can show each customer's name alongside the products they have ordered.
7. To unite in marriage.
8. (obsolete, rare) To enjoin upon; to command.
   1527 (originally published, quote is from a later edition), William Tyndale, The Obedience of a Christian Man They join them penance, as they call it.
9. To accept, or engage in, as a contest.
   to join encounter, battle, or issue