Expansile

[ik-span-sil, -sahyl] /ɪkˈspæn sɪl, -saɪl/

adjective
1.
capable of expanding; such as to expand.
2.
pertaining to .
/ɪkˈspænsaɪl/
adjective
1.
able to expand or cause expansion
2.
of or relating to expansion

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Expansional
[ik-span-shuh n] /ɪkˈspæn ʃən/ noun 1. the act or process of expanding. 2. the state or quality of being expanded. 3. the amount or degree of expanding. 4. an expanded, dilated, or enlarged portion or form of a thing: The present article is an expansion of one he wrote last year. 5. anything spread out; […]
Expansionary
[ik-span-shuh-ner-ee] /ɪkˈspæn ʃəˌnɛr i/ adjective 1. tending toward : an expansionary economy.
Expansion-attic
noun 1. an attic space designed or suitable to be finished as a living space.

Expansion bend
noun 1. (engineering) a loop in a pipe conveying hot fluid that provides flexibility which takes up thermal expansion and thus reduces temperature-induced stress in the pipe to an acceptable level
Expansion-bit
noun 1. . noun, Carpentry. 1. an adjustable bit for drilling holes of different sizes.