Definition of build onto
: to add (a new room) to a structure that already exists They built a new garage onto their house. They built onto their house.
Word by Word Definitions
: to form by ordering and uniting materials by gradual means into a composite whole : construct
: to cause to be constructed
: to develop according to a systematic plan, by a definite process, or on a particular base
: form or mode of structure : make
: bodily conformation of a person or animal
: to a position on
: in or into a state of awareness about
: used as a function word to indicate a set each element of which is the image of at least one element of another set
: mapping elements in such a way that every element in one set is the image of at least one element in another set
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