Q:

Which meaning of "impose" is "imposing" based on?

Which meaning of "impose" is "imposing" based on? From Wikionary,
"imposing" means "Magnificent and impressive because of appearance, size, stateliness or dignity."
"impose" means

(transitive) To establish or apply by authority.  
(intransitive) to be an inconvenience
to enforce: compel to behave in a certain way
To practice a trick or deception.
To lay on, as the hands, in the religious rites of confirmation and ordination.
To arrange in proper order on a table of stone or metal and lock up in a chase for printing; said of columns or pages of type, forms,
  etc.

A:

Something in between the first one and the third one, to make a great impression, to be heavy upon one's mind. When something is imposing, it overwhelms you with its force or skill, it is formidable. Latin impono means "to put (something) in/onto (something)". So an imposing statue affects you by the metaphoric weight of its splendour or size. A similar metaphor lies behind impressive.

