- Expand is defined as to increase in size, unfold or spread out.
- An example of expand is someone making friends at a party.
- An example of expand is a pregnant woman's belly.
- An example of expand is someone gathering more knowledge about a topic.
- to spread out; open out; stretch out; unfold: the eagle expanded its wings
- to make greater in size, bulk, scope, etc.; enlarge; dilate; extend
- to enlarge upon (a topic, idea, etc.); develop in detail
- to work out or show the full form of (a contraction, mathematical equation, etc.)
Origin of expandMiddle English expanden ; from Classical Latin expandere ; from ex-, out + pandere, to spread, extend; akin to patere: see fathom
- to become expanded; spread out, unfold, enlarge, etc.
- to become affable, warmly communicative, etc.
verbex·pand·ed, ex·pand·ing, ex·pands
- To increase the size, volume, quantity, or scope of; enlarge: expanded her store by adding a second room. See Synonyms at increase.
- To express at length or in detail; enlarge on: expanded his remarks afterward.
- To open (something) up or out; spread out: The bird expanded its wings and flew off.
- Mathematics To write (a quantity) as a sum of terms in an extended form.
- To become greater in size, volume, quantity, or scope: Air expands when heated. This critic's influence is expanding.
- To speak or write at length or in detail: expand on a favorite topic.
- To open up or out; unfold: The chair expands to form a day bed.
Origin of expandMiddle English expanden, to spread out, from Latin expandere : ex-, ex- + pandere, to spread; see pet&schwa;- in Indo-European roots.
(third-person singular simple present expands, present participle expanding, simple past and past participle expanded)
- To change (something) from a smaller form and/or size to a larger one.
- You can expand this compact umbrella to cover a large table.
- To increase the extent, number, volume or scope of (something).
- A flower expands its leaves.
- To express (something) at length and/or in detail.
- (algebra) To rewrite (an expression) as a longer, yet equivalent sum of terms.
- Use the binomial theorem to expand to
- (intransitive) To (be) change(d) from a smaller form/size to a larger one.
- Many materials expand when heated.
- This compact umbrella expands to cover a large table.
- (intransitive) To (be) increase(d) in extent, number, volume or scope.
- (intransitive) To speak or write at length or in detail.
- He's so pedantic, he expands on everything!
- (intransitive) To feel generous or optimistic.
Recorded in Middle English since 1422, from Anglo-Norman espaundre, from Latin expandere present active infinitive of expandō (“to spread out”), itself from ex- (“out, outwards”) + pandō (“to spread”).