Standard Lemma guide

semicentenary

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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • General-American: /ˌsɛˌmaɪˌsɛnˈtɛnəri/
  • General-American: /ˌsɛˌmaɪˈsɛnəˌnɛri/
  • General-American: /ˌsɛˌmaɪˈsɛntəˌnɛri/
  • General-American: /ˌsɛmiˌsɛnˈtɛnəri/
  • General-American: /ˌsɛmiˈsɛnəˌnɛri/
  • General-American: /ˌsɛmiˈsɛntəˌnɛri/
  • Received-Pronunciation: /ˌsɛmɪsɛnˈtiːnri/
  • Received-Pronunciation: /ˌsɛmɪsɛnˈtiːnəri/
  • Received-Pronunciation: /ˌsɛmɪsɛnˈtɛnri/
  • Received-Pronunciation: /ˌsɛmɪsɛnˈtɛnəri/
  • Received-Pronunciation: /ˌsɛmɪsnˈtiːnri/
  • Received-Pronunciation: /ˌsɛmɪsənˈtiːnri/
  • Received-Pronunciation: /ˌsɛmɪsnˈtiːnəri/
  • Received-Pronunciation: /ˌsɛmɪsənˈtiːnəri/
  • Received-Pronunciation: /ˌsɛmɪsnˈtɛnri/
  • Received-Pronunciation: /ˌsɛmɪsənˈtɛnri/
  • Received-Pronunciation: /ˌsɛmɪsnˈtɛnəri/
  • Received-Pronunciation: /ˌsɛmɪsənˈtɛnəri/

1

noun

Meaning 1

Synonym of semicentennial: a 50th anniversary.

Definition source: English Wiktionary via Wiktextract

Examples

  • The city celebrated its semicentenary last year.

Meaning relationships

Synonyms: semicentennial

Antonyms: none provided

2

adjective

Meaning 2

of or relating to or marking the 50th anniversary

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: semicentennial

Antonyms: none provided

3

noun

Meaning 3

the 50th anniversary (or the celebration of it)

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: semicentennial

Antonyms: none provided

Broader terms: anniversary, day of remembrance

History

Etymology

From semi- (“half”) + centenary (“100th anniversary”), q.v.