Question

What do you mean by parasitic nutrition ?

Answer 1

an organism that feeds on another organism
that sometimes takes away the nutrition and kills it

Answer 2

The mode of nutrition in which a plant or an animal depends on others for the requirement of nutrients is called parasitic nutrition.
The organism which obtains the food is called a parasite and the organism from whose body food is obtained is called the host.
A parasite usually harms the host.
The host may be a plant or an animal.
Parasitic mode of nutrition is seen in several fungi, bacteria, a few plants like cuscuta and animals like plasmodium.