The difference between Expand and Open out
When used as verbs, expand means to change (something) from a smaller form and/or size to a larger one, whereas open out means to expand, to widen, to unwrap or unfold, to spread out from a compact state.
check bellow for the other definitions of Expand and Open out
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Expand as a verb (transitive):
To change (something) from a smaller form and/or size to a larger one; to spread out or lay open.
Examples:
"You can expand this compact umbrella to cover a large table."
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Expand as a verb (transitive):
To increase the extent, number, volume or scope of (something).
Examples:
"A flower expands its leaves."
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Expand as a verb (transitive):
To express (something) at length and/or in detail.
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Expand as a verb (transitive, algebra):
To rewrite (an expression) as a longer, yet equivalent sum of terms.
Examples:
"Use the binomial theorem to expand (x+1)<sup>4</sup> to x<sup>4</sup> + 4x<sup>3</sup> + 6x<sup>2</sup> + 4x + 1."
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Expand as a verb (transitive, arithmetic):
To multiply both the numerator and the denominator of a fraction by the same natural number yielding a fraction of equal value
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Expand as a verb (intransitive):
To change from a smaller form/size to a larger one.
Examples:
"Many materials expand when heated."
"This compact umbrella expands to cover a large table."
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Expand as a verb (intransitive):
To increase in extent, number, volume or scope.
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Expand as a verb (intransitive):
To speak or write at length or in detail.
Examples:
"He expanded on his plans for the business."
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Expand as a verb (intransitive):
To feel generous or optimistic.
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Open out as a verb:
to expand, to widen, to unwrap or unfold, to spread out from a compact state