• IPA: /ˈdʒɔɪn/

join (plural joins)

1. An intersection of piping or wiring; an interconnect.
2. (computing, databases) An intersection of data in two or more database tables.
3. (computing) The act of joining something, such as a network.
4. (algebra) The lowest upper bound, an operation between pairs of elements in a lattice, denoted by the symbol ∨.

• (lowest upper bound) meet

• French: jointure
• German: Verbindung
• Portuguese: conexão
• Russian: соедине́ние

• French: jointure
• Portuguese: junção

join (joins, present participle joining; past and past participle joined)

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.

   • c. 1596, William Shakespeare, “The Life and Death of King Iohn”, in Mr. William Shakespeares Comedies, Histories, & Tragedies: Published According to the True Originall Copies (First Folio), London: Printed by Isaac Iaggard, and Ed[ward] Blount, published 1623, OCLC 606515358 ↗, [Act 3, scene i]:

     Nature and fortune joined to make thee great.

3. (transitive) To come into the company of.

   I will join you watching the football game as soon as I have finished my work.

4. (transitive) To become a member of.

   Many children join a sports club.

   Most politicians have joined a party.

5. (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.

6. To unite in marriage.

   • he that joineth his virgin in matrimony

   • 1611, The Holy Bible, […] (King James Version), imprinted at London: By Robert Barker, […], OCLC 964384981 ↗, Matthew 19:6 ↗:

     What, therefore, God hath joined together, let not man put asunder.

7. (obsolete, rare) To enjoin upon; to command.

   • They join them penance, as they call it.

8. To accept, or engage in, as a contest.

   to join encounter, battle, or issue

• (to combine more than one item into one) bewed, connect, fay, unite; see also Thesaurus:join

• French: joindre
• German: verknüpfen, vereinigen, anschließen
• Italian: unire, giuntare
• Portuguese: juntar, unir
• Russian: соединя́ть
• Spanish: juntar, aunar

• German: zusammenkommen
• Italian: incontrare
• Portuguese: juntar-se
• Russian: соединя́ться
• Spanish: acompañar

• French: joindre
• German: anschließen
• Italian: aggregarsi
• Portuguese: juntar-se a
• Russian: присоединя́ться

• French: joindre
• German: beitreten
• Italian: aderire, entrare a far parte
• Portuguese: juntar-se a, entrar em
• Russian: вступа́ть
• Spanish: unirse