Oil:

Oily substance, and liquid fuel. Insoluble in water but mixes easily in organic solvents like ether. The oils, according to their origin can be classified as mineral oils, vegetable or animal.

Ointment:

Medicinal preparations that are applied to the skin at ambient temperatures, softening with body heat due to its resin content. It stretches the skin, mucous membranes or damaged tissues, (now considered synonymous with ointment).

Ointment:

Semisolid dosage form without water or too little of it, intended to be applied externally, containing one or more medicinal substances.

Order:

Taxonomic group of related organisms between family and class.

Organism:

Microscopic organism. In general, within this term, it encompasses viruses, bacteria, fungi and protozoa. There are beneficial microorganisms, other neutral and harmful to man, becoming fatal in many cases.

Ovary:

Closed part of the pistil that contains it or the eggs.

Ovum:

Small bodies, rounded, usually white, located inside the ovary, which after flowering and subsequent fertilization by pollen, seeds will result.

Oxytocic:

A substance that facilitates the delivery.