There are 2 main definitions of tween in English:

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tween 1

Pronunciation: /twēn/
(also tweenie /ˈtwēnē/)

noun

Short for tweenager.
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There are 2 main definitions of tween in English:

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Tween 2

Pronunciation: /twēn/

noun

trademark
Any of a class of compounds used especially as emulsifiers and surfactants. They are derivatives of fatty acid esters of sorbitan.
Example sentences
  • Genomic DNA from each mutant colony was extracted using a Tween - 20 / proteinase K digestion mixture.
  • We have studied the effect of the detergent Tween 20 on transient pores and the line tension in DOPC bilayers.
  • Similar results for the SOS Chromotest were obtained with various non-ionic surfactants, such as Tween 20 and 80, Triton X - 305 and Tyloxapol.

Origin

1940s: of unknown origin.

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