Adfluvial

Part of speech: adjective

Definitions

1. Flowing toward or converging into a central point or main stream
2. Relating to the flow of water that approaches and joins a larger river or stream, especially highlighting the convergence of tributaries into a main watercourse
3. Moving water that goes toward and joins a larger river channel ; concerning streams that feed into a main river creating a network of waterways

Etymology: "Adfluvial" is a technical coinage built from two parts: the Latin prefix "ad-", meaning "toward" or "to", and "fluvial", the adjective for rivers, which itself comes from Latin "fluvialis", from "fluvius", a river, related to "fluere", to flow. Put together, the term describes things that move toward a river, as opposed to moving away from one. The word belongs to the vocabulary of ecology and fish biology, where it is used for animals that migrate upstream or otherwise travel toward rivers from the surrounding land or sea. Its structure is transparent: a Latin preposition attached to a Latin-derived adjective, a pattern common in scientific English. Because it is a modern formation, it has no ancient history of its own; its meaning comes entirely from the parts it was assembled from.