to make something larger in size, scale, or volume

to increase in scale, scope, territory, or power

To spread, proliferate, or diffuse.

to increase the scope, scale, or range of something, often by spreading outwards

to extend (a building, an airport runway etc)

to expand

a device such as a megaphone or speaker used to project sound and make it audible at a distance

to extend or broaden the scope of an action, policy, or conflict beyond its appropriate limits

to expand the size and strength of the armed forces; military buildup or armament

The spread of nuclear weapons and technology.

to enlarge color photos or the process of color film developing and printing

to expand the personnel or organizational scale of a unit, particularly in a military or administrative context

to increase the number of pages or the size of the pages of a publication

(file) extension (computing)

to enlarge and print a photograph

an electronic device used to increase the power or volume of an electrical signal

to ramp up capacity, often referring to data storage, server bandwidth, or volume

chest expander (exercise equipment)

theory of seafloor spreading in geology

extensible markup language (XML)

(Internet slang) to add someone to one's contact list on social media

to extend to

to amplify, especially in a biological or scientific context such as DNA replication

augmented reality (computing)

to expand production or reproduce on an extended scale, typically by reinvesting surplus value into capital

to enlarge or widen an existing hole or tube, especially using a mechanical tool

an extension for a software application, especially for web browsers

to spread information widely so that everyone is informed; to let everyone know

to expand the balance sheet

to amplify sound

seafloor spreading (geology)

Treaty on the Non-Proliferation of Nuclear Weapons