Ancient Greek word root · Prefixes
dia-: through, across
dia- is an Ancient Greek root meaning “through, across”. Learn its variants and explore 3 connected words.
Meaning and variants
Meaning: through, across
Root forms: dia-, di-
Source word: διά — [with genitive]
Word family and examples
- dialogue
a conversation between two or more people
- diagnosis
the identification of the nature of an illness by examination
- diameter
a straight line passing through the center of a circle
Root connections help with vocabulary recall. They are not a complete etymological history, and a spelling match alone does not prove a relationship.
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Source: Wiktionary. Dictionary text is adapted from Wiktionary under CC BY-SA 4.0. Definitions are selected and reformatted; root links are curated by Word Radicals. Read about sources and limitations.