porpoise noun [C]. âº a âmammal that âlives in the âsea, âswims in âgroups, and âlooks âsimilar to a dolphin but has a âshorter ârounder ânose. (Definition of porpoise from the Cambridge Advanced Learnerâs Dictionary & Thesaurus Â© Cambridge University Press). See all translations.
Definition of point of no return. 1  1 : the point in the flight of an aircraft beyond which the remaining fuel will be insufficient for a return to the starting point with the result that the craft must proceed. 2  2 : a critical point at which turning back or reversal is not possible.
A âturning pointâ is defined as a moment in which a critical decision must be made. This is the crossroads many of our clients reach when they contact Turning Point Programs (TPP). The program began in 1973 by The Salvation Army offering a refuge for West Michigan residents desiring to overcome active addictions.