1. Pertaining to something that has not clearly been mentioned or stated; implied; roundabout: Susan certainly did not go straight to the point of her visit, but kept mentioning the topic in the most indirect way.
2. Regarding an effect or result that has not been induced or created instantly, but happens as a consequence of another thing happening: As an indirect result of the military battle between the two countries, an uncountable number of people and animals die of starvation.

The measurement of serum ions; such as, sodium, chloride, and potassium, which employs a sample diluted prior to analysis.

This method tends to result in errors in cases of hyperlipidemia or elevated concentrations of any or all of the lipids; such as, fatty, greasy, oily, and waxy compounds in the blood.

A transfusion of blood from a donor to a suitable storage container and then to the patient.

The sight perceived by the peripheral retina (the outer boundary or edge of the light-sensitive membrane lining the inner eyeball and connected by the optic nerve to the brain).