plastic that is made light and spongy by the introduction of pockets of gas or air.
[ik-span-der] /ɪkˈspæn dər/ noun 1. a person or thing that . 2. Also, expandor. Electronics. a transducer that produces an output with a range of voltages greater than that of the input signal. Compare (def 5). /ɪkˈspændə/ noun 1. a device for exercising and developing the muscles of the body: a chest expander 2. an […]
noun, Astronomy. 1. a concept or representation of the universe, based on the observed redshifts of distant galaxies, in which the galaxies are assumed to be receding from each other at a speed proportional to their separation as a result of the expansion of the universe.
- Expanding universe theory
noun 1. the theory, developed from the observed red shifts of celestial bodies, that the space between galaxies is expanding, so that they appear to recede from us at velocities that increase with their distance See also oscillating universe theory expanding universe theory (ĭk-spān’dĭng)
[ik-spans] /ɪkˈspæns/ noun 1. an uninterrupted space or area; a wide extent of anything: an expanse of water. 2. something that is spread out, especially over a relatively large area: that great expanse, the sky. 3. ; extension: the wide expanse of scientific knowledge. /ɪkˈspæns/ noun 1. an uninterrupted surface of something that spreads or […]