There are 2 main definitions of tween in English:

tween1

Line breaks: tween
Pronunciation: /twiːn
 
/
(also tweenie)

noun

Short for tweenager.

Definition of tween in:

There are 2 main definitions of tween in English:

Tween2

Line breaks: Tween
Pronunciation: /twiːn
 
/

noun

trademark
Any of a class of compounds used especially as emulsifiers and surfactants. They are derivatives of fatty acid esters of sorbitan.
More 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.

Definition of tween in: