if–then

Noun

if-then (plural if-thens)

1. A proposition or statement about what should or does occur when a certain condition is met.
   • Disposition statements are always tantamount to conditional if-thens. (“Glass is fragile” amounts to “If glass is subjected to a shock, it will break”; “Wood is combustible” comes to “If wood is exposed to fire, it will burn”; and so on.)2007, Nicholas Rescher, Conditionals, MIT Press, →ISBN, page 13
2. A conditional statement; a line of code that specifies a Boolean condition to check and a statement to execute when that Boolean evaluates to true.
   • List Formatter makes properly-spaced & indented listings with page breaks; each statement on new line, if-thens and loops called out; a great de-bugger!1981, Apple Orchard, page 31