bloodsucker

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bloodsucker

Microbiology
Any haematophagous organisms, classically the medicinal leech (Hirudo medicinalis) and related species.
 
Psychology
A popular term for a person who
(1) sucks the emotional life out of others;
(2) uses others.
References in periodicals archive ?
This indirect effect is mainly due to a decrease in nutrient use [127] resulting from many factors, such as a lack of appetite and a decrease in the voluntary feed intake observed in the parasitized animal [40, 92, 117, 125], irreversible loss of proteins in the gastric lumen by hematophagy, hemorrhagic gastritis and loss of plasma proteins through greater mucosa permeability [39, 95, 100] and lowered digestibility [22, 23, 24, 39, 105, 106].