Englishfor English speakers
fourfold
—
adjective
four times as great or many
a fourfold increase in the dosage
—
adverb
by a factor of four
the price of gasoline has increased fourfold over the past two years
—
adjective
(= quadruple, quadruplex)
having four units or components
quadruple rhythm has four beats per measure
quadruplex wire
symmetry
Noun
—
A balance or harmony of parts.
—
A division of the body would produce two parts which are mirror images of each other.
—
An arrangement of parts around a central point.
An orange has symmetry: it is a sphere with segments arranged around a common central line.
The segments of an orange show symmetry: their shape and relative positions are the same.