Obelus

/ˈɒbɪləs/ noun

noun ·Rare ·Advanced level

Meaning at a glance

  • Primary sense: A symbol resembling a horizontal line (–), sometimes together with one or two dots (for example, ⨪ or ÷), which was used in ancient manuscripts and texts to mark a word or passage as doubtful or spurious, or redundant; an obelisk.
  • Grammar: obelus is listed as noun.
  • Nearest alternatives: dagger, daggers.
  • Usage evidence: The ancienteſt of all is that of the Library of M. Colbert, which contains part of Exodus, Numbers, and Leviticus, of the Tranſlation of the Septuagint, with Lines call'd Obeli and Aſteriſks, as we find them in the Hexapla of Origen.

How to use "obelus"

  1. Start with the primary definition, then check the part of speech before placing the word in a sentence.
  2. Compare nearby synonyms to make sure "obelus" carries the exact meaning, tone, and strength you need.
  3. Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.

Meaning check

  • Does the word fit the sentence's grammar?
  • Does it match the intended tone rather than only the dictionary definition?
  • Would a simpler synonym be clearer for the reader?
  • Is there enough surrounding context to prevent ambiguity?

Source and review context

This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "obelus" in a final draft.

If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.

Before you rely on this definition

Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "obelus" as the right word for your sentence.

If your draft is formal, technical, persuasive, or sensitive, compare "obelus" with a nearby alternative so the final choice matches both meaning and reader expectation.

Compare nearby meanings

  • Use synonyms when you need a softer, stronger, simpler, or more specific word.
  • Use antonyms to check the boundary of the meaning and avoid accidental contrast.
  • Use the example sentence to confirm the word behaves naturally in context.
  • Keep the original wording when a replacement adds complexity without improving precision.

Definition decision workflow

1. Identify the role

Check whether "obelus" is acting as noun in your sentence. A definition is only useful when the grammar matches the way the word is being used.

2. Test the nearest option

Compare it with "dagger" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.

3. Confirm with context

Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.

Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.

Final meaning check

Before publishing a sentence with "obelus", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.

When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.

Definitions

Noun
  1. 1
    A symbol resembling a horizontal line (–), sometimes together with one or two dots (for example, ⨪ or ÷), which was used in ancient manuscripts and texts to mark a word or passage as doubtful or spurious, or redundant; an obelisk. historical

    "The ancienteſt of all is that of the Library of M. Colbert, which contains part of Exodus, Numbers, and Leviticus, of the Tranſlation of the Septuagint, with Lines call'd Obeli and Aſteriſks, as we find them in the Hexapla of Origen."

  2. 2
    A dagger symbol (†), which is used in printed matter as a reference mark to refer the reader to a footnote, marginal note, etc.; beside a person's name to indicate that the person is deceased; or beside a date to indicate that it is a person's death date; an obelisk.

    "And, with respect to the Homer of Aristarchus, it is to be considered, that besides the lines, sentences, and long passages, to which that Herod of critics affixed his obelus (†) or stiletto, there were entire books which he found no use on obelising piecemeal; because it was not this line or that line into which he wished to thrust his dagger, but the whole rabble of lines—"tag, rag, and bobtail.""

Example

"The ancienteſt of all is that of the Library of M. Colbert, which contains part of Exodus, Numbers, and Leviticus, of the Tranſlation of the Septuagint, with Lines call'd Obeli and Aſteriſks, as we find them in the Hexapla of Origen."

Common questions

What does "obelus" mean?

A symbol resembling a horizontal line (–), sometimes together with one or two dots (for example, ⨪ or ÷), which was used in ancient manuscripts and texts to mark a word or passage as doubtful or spurious, or redundant; an obelisk.

What is a synonym for "obelus"?

Common synonyms include: dagger, daggers.

How do you use "obelus" in a sentence?

The ancienteſt of all is that of the Library of M. Colbert, which contains part of Exodus, Numbers, and Leviticus, of the Tranſlation of the Septuagint, with Lines call'd Obeli and Aſteriſks, as we find them in the Hexapla of Origen.

How do you pronounce "obelus"?

Pronounced /ˈɒbɪləs/.

Etymology

From Middle English obelus, obelo, from Old English obelus, from Late Latin obelus (“critical mark”), from Koine Greek ὀβελός (obelós, “critical mark”), Ancient Greek ὀβελός (obelós, “rod, spit; obelisk; critical mark”). The further etymology is uncertain; a derivation from βέλος (bélos, “arrow, dart, missile”) (from Proto-Indo-European *gʷelH- (“to pierce; to reach; to throw; to hit by throwing”)) has been suggested, but the initial vowel remains unexplained. Compare obelisk. The plural form obeli is derived from Late Latin obeli, from Ancient Greek ὀβελοί (obeloí).

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