Definitions for HM
This page provides all possible meanings and translations of the word HM
Random House Webster's College Dictionary
Category: Weights and Measures
Her (or His) Majesty.
hectometer, hectometre, hm(noun)
a metric unit of length equal to 100 meters
Henry Gustav Molaison, known widely as H.M., was an American memory disorder patient who had a bilateral medial temporal lobectomy to surgically remove the anterior two thirds of his hippocampi, parahippocampal cortices, entorhinal cortices, piriform cortices, and amygdalae in an attempt to cure his epilepsy. He was widely studied from late 1957 until his death. His case played a very important role in the development of theories that explain the link between brain function and memory, and in the development of cognitive neuropsychology, a branch of psychology that aims to understand how the structure and function of the brain relates to specific psychological processes. He resided in a care institute located in Windsor Locks, Connecticut, where he was the subject of ongoing investigation. Molaison's brain is kept at UC San Diego where it was sliced into histological sections on December 4, 2009. The corresponding data has since then been made available to researchers.
British National Corpus
Written Corpus Frequency
Rank popularity for the word 'HM' in Written Corpus Frequency: #1622
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