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situation ethics a system of ethics in which moral rules are not absolute but may be modified for special situations.
sit-up an exercise for the stomach muscles, in which one lies flat on one's back and then sits up without bending the legs and without support from the arms.
sitz bath a chairlike tub or basin used for bathing the hips and buttocks.
Siva see Shiva.
Sivan the ninth month of the Jewish lunisolar calendar, occurring from late May through early June in the Gregorian calendar.
six the number represented by the Arabic numeral 6 and by the Roman numeral VI. [3 definitions]
sixfold having six parts or elements. [3 definitions]
Six Nations a confederation of Iroquois Indian peoples, originally including the Mohawks, Oneidas, Onondagas, Cayugas, and Senecas, and expanded in the eighteenth century to include the Tuscaroras.
six-pack a container of six bottles or cans, usu. of beer or a carbonated beverage.
sixpence a coin formerly minted in England worth six pence. [2 definitions]
sixpenny of small value; cheap. [2 definitions]
six-shooter (informal) a handgun that holds six bullets.
sixteen the number represented by the Arabic numeral 16 and by the Roman numeral XVI. [3 definitions]
sixteenth indicating rank or position between fifteenth and seventeenth. [3 definitions]
sixteenth note in music, a note with one sixteenth the value of a whole note; semiquaver.
sixth indicating rank or position between fifth and seventh. [4 definitions]
sixth sense the ability to perceive independently of the five senses; intuition.
sixtieth indicating rank or position between fifty-ninth and sixty-first. [3 definitions]
sixty the number represented by the Arabic numeral 60 and by the Roman numeral LX. [5 definitions]
sixtyfourth note in music, a note with one sixty-fourth the value of a whole note; hemidemisemiquaver.
sixty-nine (vulgar slang) mutual simultaneous oral-genital sex activity.