8-Letter Words Containing: O,C,O,I,D

• living within a living animal usually as a parasite

• Any of a family of curves defined as the locus of points p, such that each p is on a line that passes through a given fixed point P and intersects a given curve, C, and the distance from p to the point of intersection with C is a specified constant (note that for nontrivial cases two such points p satisfy the criteria, and the resultant curve has two parts).

• (of a disease or symptom) That occurs at the same time as another.

• The pigmented vascular layer of the eyeball between the retina and the sclera.

• a highly vascular membrane in the eye between the retina and the sclera; a dark pigmentation minimizes the scattering of light inside the eye