A concept developed by Soviet psychologist and social constructivist Lev Vygotsky: the difference between what a learner can do without help and what he or she can do with help.

(software engineering) A software development process that relies on the repetition of a minimal development cycle where the developer writes an (initially failing) automated test case that defines a desired improvement or new function, then produces the minimum amount of code to pass that test, and finally refactors the new code to acceptable standards.

plural of Millennium Development Goal

(UK politics) The official full name of the Foreign Office.

A job that is designed to train or develop employees in preparation for further career advancement. example: management trainee

A trainee flight controller.

Related to development.

In terms of development.

(biology) A branch of biology that studies the interaction of evolutionary and developmental processes.

Any life-long disability attributable to mental and/or physical impairments, manifested during childhood or later in the human development age (variously given as being before age 16, 18, or 21).