immature proglottid:
body segment of Cestoda containing only rudiments of the genital organs.
indirect life cycle:
A life cycle in which at least one of the larval stages is parasitic, in a different host than the adult.
inflammation:
a local response to cellular injury that can include capillary dilation, leucocytic infiltration, redness, heat and pain.
intercellular:
present in tissues, in the spaces between cells.
intermediate host:
a required host infected by a larval parasite. Where more than one intermediate host is required, they are numbered in sequence as first, second, etc.
internal seminal vesicle:
an expansion of the vas deferens within the cirrus pouch to store sperm prior to copulation.
intracellular:
present within cells.
invaginate:
to retract an organ, turning it inside-out in the process.
irritant:
any agent that induces an inflammation.