Mo. Rev. Stat. § 442.010: Definitions.

When used in this chapter unless otherwise apparent from the context:

(1) The term "adult" shall be construed as meaning any person who is eighteen years of age or older;

(2) The term "minor" shall be construed as meaning any person who is less than eighteen years of age;

(3) The term "real estate" shall be construed as coextensive in meaning with lands, tenements and hereditaments, and as embracing all chattels real and as including a manufactured home as defined in section 700.010, which is real estate as defined in subsection 7 of section 442.015.