precursor
Something that precedes.
1. (Science: biochemistry) In biological processes, a substance from which another, usually more active or mature substance is formed.
2. In clinical medicine, a sign or symptom that heralds another.
Origin: L. Praecursor = a forerunner
Dictionary > Precursor
You will also like...
The Dinosaurs
Dinosaurs represented a major turn in the evolutionary development of organisms on Earth. The first dinosaurs were presu..
Fish
The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..
Psychiatry & Mental Disorders
Different mental disorders are described here. Read this tutorial to get an overview of schizophrenia, affective mood di..
Consciousness and Behavior
Human consciousness and behavior are an interesting topic since they are determined and controlled by the brain. Conscio..
Independent Assortment and Crossing Over
This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..
Stems
Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..