retrospective
concerned with or related to the past
specimen
a bit of tissue or blood or urine that is taken for diagnostic purposes
saturate
infuse or fill completely
pulsate
expand and contract rhythmically; beat rhythmically
calorie
unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure
solarium
a room enclosed largely with glass and affording exposure to the sun
