Other forms: mounted, mounting, mounts
To mount is to climb onto something, or to organise and launch it. Mount a horse, mount an exhibition, pressure is mounting.
The launching sense is the busiest — you mount a campaign, a defence, a challenge — and it always means putting something together deliberately. To mount also means to fix in place, as a picture is mounted. Note Mount as the word for a mountain in names.
1verbclimbTo climb onto something.
“The rider mounted her horse and trotted out of the yard.”
2verbmountTo organise and launch something.
“The villagers mounted a campaign to save their local library.”
mount is a climbing, or a launching.
Old French monter means to go up, from Latin mons, a mountain. Mountain and amount come from the same height.
Proto-Indo-European
*men-
Latin
mōns — a hill, mountain
Old English
munt
Middle English
mount
English, today
mount
Built from
From Middle English mount, munt, from Old English munt, from Latin mōns (“a hill, mountain”), from a root seen also in ēmineō (“to project, to protrude”) (English eminent). a doublet of mons. Not related to mound.
Etymology from Wiktionary, CC BY-SA