# abaciscus

CEFR C2 · Noun

Source: https://englishreference.com/word/abaciscus
Updated: 2026-05-02

## Definition

a small, square tile or stone used to make a mosaic pattern. You find these in old buildings or art on floors and walls.

For teachers: a small square stone or tile used in the construction of mosaic pavements or decorative panels. Often used as a synonym for tessera in architectural and archaeological contexts.

## Examples

- The artist carefully placed each abaciscus to finish the pattern.
- Archaeologists recovered several abaciscus fragments from the villa floor, suggesting the room once featured a complex geometric mosaic.
- The preservation of the Roman bathhouse was remarkable, with every abaciscus in the central medallion remaining perfectly aligned despite centuries of environmental pressure and soil shifting.

## Usage notes

- Primarily used in technical descriptions of ancient architecture or classical art history.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.