# arachno-

> English word · Prefix

## Definitions
1. Arachnid; arachnidial; spider.
2. A boron structure intermediate between nido- and hypho- in degree of openness.

## Etymology
From international scientific vocabulary, reflecting a New Latin combining form, from Ancient Greek ἀράχνη (arákhnē, “spider”). By surface analysis, arachn- + -o-. Piecewise doublet of araneo-.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/arachno