# H-DNA

> English word · Noun

## Definitions
1. A configuration of DNA, a triple-stranded DNA helix structure, right-hand twisting, where the third DNA strand fills in the major groove found in B-DNA, bonding to the B-DNA with Hoogsteen-type bonding, forming Hoogsteen base pairs.
2. A DNA helix in such a configuration.

## Etymology
From H + DNA. From containing Hoogsteen-type nucleobase bonding, in addition to Watson-Crick normal style bonding of base pairs.

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