ex·pand ( k-sp nd )v. ex·pand·ed, ex·pand·ing, ex·pands v.tr. 1. To increase the size, volume, quantity, or scope of; enlarge: expanded her store by adding a second room. See Synonyms at increase. 2. To express at length or in detail; enlarge on: expanded his remarks afterward. 3. To open (something) up or out; spread out: The bird expanded its wings and flew off. 4. Mathematics To write (a quantity) as a sum of terms in an extended form. v.intr. 1. To become greater in size, volume, quantity, or scope: Air expands when heated. This critic's influence is expanding. 2. To speak or write at length or in detail: expand on a favorite topic. 3. To open up or out; unfold: The chair expands to form a day bed. 4. To feel expansive. [Middle English expanden, to spread out, from Latin expandere : ex-, ex- + pandere, to spread; see pet  - in Indo-European roots.]ex·pand a·ble adj.ex·pand er n. |
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