in·ter·vene 
/ˌɪntɚˈvi:n/ verb
in·ter·venes; in·ter·vened; in·ter·ven·ing /ˌɪntɚˈvi:n/ verb [no obj] 1 : to come or occur between two times or events
▪ Twenty years intervened between their first and last meetings. 2 : to become involved in something (such as a conflict) in order to have an influence on what happens
▪ The prisoner asked me to intervene with the authorities on his behalf. ▪ The military had to intervene to restore order. — often + in ▪ We need the courts to intervene in this dispute. 3 : to happen as an unrelated event that causes a delay or problem
▪ We will leave on time unless some crisis intervenes.
▪ Twenty years intervened between their first and last meetings.
▪ The prisoner asked me to intervene with the authorities on his behalf. ▪ The military had to intervene to restore order. — often + in ▪ We need the courts to intervene in this dispute.
▪ We will leave on time unless some crisis intervenes.
— intervening adjective always used before another noun
▪ They have spent the intervening years trying to figure out what happened.
▪ They have spent the intervening years trying to figure out what happened.
— in·ter·ven·tion /ˌɪntɚˈvɛnʃən/ noun, plural in·ter·ven·tions
[noncount] ▪ praying for divine intervention ▪ This situation called for military intervention. ▪ The program is able to run without intervention by the user. ▪ medical intervention [=treatment] [count] ▪ military interventions
/ˌɪntɚˈvɛnʃən/ noun, plural in·ter·ven·tions [noncount] ▪ praying for divine intervention ▪ This situation called for military intervention. ▪ The program is able to run without intervention by the user. ▪ medical intervention [=treatment] [count] ▪ military interventions
