Sentence:  ( 3 ) For <WSD>anionics</WSD> , these micelles appear to be roughly spherical assemblages in which the hydrocarbon tails come together so that the polar groups ( the ionized ends ) face outward towards the aqueous continuous phase . 
Meaning of the word marked with <WSD> tags:  a class of synthetic detergents in which the molecules do not ionize in aqueous solutions