Entry Word: expansion

Function: noun

Meaning: 1 something added (as by growth) <the museumʼs new wing is only the first in a series of expansions planned for the next decade> — see increase 1
2 the act or process of going from the simple or basic to the complex or advanced <the expansion of remedial reading classes into a district-wide program using school volunteers for a variety of needs> — see development 1