make (alcohol) unfit for drinking without impairing usefulness for other purposes
modify (as a native protein) especially by heat, acid, alkali, or ultraviolet radiation so that all of the original properties are removed or diminished
add nonfissionable material to (fissionable material) so as to make unsuitable for use in an atomic bomb
the discipline that records and interprets past events involving human beings; "he teaches Medieval history"; "history takes the long view"
all that is remembered of the past as preserved in writing; a body of knowledge; "the dawn of recorded history"; "from the beginning of history"
a record or narrative description of past events; "a history of France"; "he gave an inaccurate account of the plot to kill the president"; "the story of exposure to lead"
the aggregate of past events; "a critical time in the school's history"
the continuum of events occurring in succession leading from the past to the present and even into the future; "all of human history"
children take the roles of physician or patient or nurse and pretend they are at the physician's office; "the children explored each other's bodies by playing the game of doctor"
a licensed medical practitioner; "I felt so bad I went to see my doctor"
a person who holds Ph.D. degree (or the equivalent) from an academic institution; "she is a doctor of philosophy in physics"