, Belém, Clem, condemn, contemn, crème de la crème, em, gem, hem, Jem, LibDem, phlegm, pro tem, rem, Shem, stem, them
, per diem
•proem • idem • modem • diadem
•mayhem • Bethlehem
• ad hominem
•ad valorem • brainstem
a unit of effective absorbed dose of ionizing radiation in human tissue, equivalent to one roentgen of X-rays.
rapid eye movement.
rem (rem) n.
a former unit dose of ionizing radiation
; it was replaced by the sievert.
Initialism for "rapid eye movement," a physical phenomenon during which the most active, visually rich, and bizarre dreaming occurs.
roentgen equivalent man (former unit of radioactivity)