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Trapezium in Irish (Traipéisiam): Meaning, Pronunciation, Usage

The Irish for trapezium is traipéisiam, a masculine noun (plural traipéisiamaí).
Updated October 2026Report a mistake

How to say “trapezium” in Irish

Irish:
traipéisiam
English:
trapezium
Word type:
noun
Gender:
masculine
Pronunciation:
“TRAP-ay-shee-um”  /ˈt̪ˠɾˠapʲeːʃiəmˠ/
Various forms
Plural:
traipéisiamaí (trapeziums)
Genitive singular:
traipéisiam, an traipéisiam (e.g. achar an traipéisiam, area of the trapezium)
Genitive plural:
traipéisiamaí, na dtraipéisiamaí (e.g. airíonna na dtraipéisiamaí, the properties of the trapeziums)

What does “traipéisiam” mean?

trapezium
A four-sided flat shape with one pair of parallel sides (in some usage, with no parallel sides).Also: trapezoid, quadrilateral.

“Traipéisiam” with the article

The plural of trapezium in Irish is traipéisiamaí. Here is traipéisiam after the article (an t-alt), in the singular and the plural.

an traipéisiam
the trapezium
No change after an
na traipéisiamaí
the trapeziums
Plural: no change after na

“Traipéisiam” in a sentence: Irish examples

Common Irish sentences using traipéisiam, the Irish word for trapezium.

Tarraing traipéisiam ar an leathanach.
Draw a trapezium on the page.
Tá dhá thaobh chomhthreomhara ag an traipéisiam seo.
This trapezium has two parallel sides.
Faigh achar an traipéisiam.
Find the area of the trapezium.
Chonaic mé go leor traipéisiamaí sa leabhar mata.
I saw lots of trapeziums in the maths book.
Rinne mé botún i mo thraipéisiam.
I made a mistake in my trapezium.
Is cruth ceithre thaobh é traipéisiam.
A trapezium is a four-sided shape.
Tá na traipéisiamaí sin róbheag.
Those trapeziums are too small.

Other nouns in Irish

More everyday Irish nouns to learn next.

Trapezium in Irish: frequently asked questions

What is the Irish for trapezium?

The Irish for trapezium is traipéisiam (pronounced “TRAP-ay-shee-um”). It’s a masculine noun and the plural is traipéisiamaí.

How do you pronounce traipéisiam in Irish?

Traipéisiam is said like “TRAP-ay-shee-um” (IPA /ˈt̪ˠɾˠapʲeːʃiəmˠ/).

What is the plural of trapezium in Irish?

The plural of traipéisiam is traipéisiamaí; with the article, na traipéisiamaí means “the trapeziums”. The genitive plural is traipéisiamaí, as in airíonna na dtraipéisiamaí (the properties of the trapeziums).

Why does traipéisiam change to thraipéisiam or dtraipéisiam?

Irish changes the start of some words after certain words. After mo (my) traipéisiam becomes mo thraipéisiam (lenition), and after ár (our) or i (in) it becomes ár dtraipéisiam (eclipsis).

Is traipéisiam the same as a trapezoid?

Traipéisiam translates 'trapezium'; usage of trapezium and trapezoid differs between British and American English, so check which definition your textbook uses.

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