None. Plethysmography is a noninvasive diagnostic manometric study used to measure changes in the size of blood vessels by determining volume changes in the blood vessels of the eye, extremities, and neck or to measure gas volume changes in the lungs.
1. countable noun [usually with poss] A guardian is someone who has been legally appointed to look after the affairs of another person, for example a child or someone who is mentally ill. 2. countable noun. The guardian of something is someone who defends and protects it.
Princeton's WordNet (0.00 / 0 votes) Rate this definition: caretaker (noun). a custodian who is hired to take care of something (property or a person). caretaker (noun). an official who performs the duties of an office temporarily. he acted as a caretaker until a new president could be elected.aretaker (Noun). Someone who takes care of a place or thing; someone looking after somewhere, or with responsibility for keeping a place in good repair. caretaker (Noun). Someone who takes care of a person; a parent, carer or other guardian.