Function: noun
Date: 1889
: a school that teaches nonresident students by mailing them lessons and exercises which upon completion are returned to the school for grading
Function: noun
Date: 1889
: a school that teaches nonresident students by mailing them lessons and exercises which upon completion are returned to the school for grading
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012