Standard Lemma guide

I-beam

noun · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

A beam with cross-section shaped like a capital letter I (with serifs top and bottom), used in construction.

Definition source: English Wiktionary via Wiktextract

Topics: engineering, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A cursor shaped like the letter I, usually indicating text that can be edited or selected.

Definition source: English Wiktionary via Wiktextract

Topics: computing, engineering, graphical-user-interface, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

girder having a cross section resembling the letter `I'

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: girder

History

Etymology

Since it resembles a capital letter I with serifs.

Across languages

Translations

8 source translations are retained for this English entry.

  • Dutch: I-profiel — I-shaped beam
  • Finnish: I-palkki — I-shaped beam
  • Irish: I-bhíoma — I-shaped beam
  • Polish: dwuteownik — I-shaped beam
  • Russian: двута́вр (dvutávr) — I-shaped beam
  • Russian: двута́вровая ба́лка (dvutávrovaja bálka) — I-shaped beam
  • Turkish: putrel — I-shaped beam
  • Ottoman Turkish: پوترل (putrel) — I-shaped beam