actus

noun

By · According to Wiktionary data (CC BY-SA) ·

"actus" is a 5-letter English headword indexed on PlainSpell.

The verdict

“actus” is an uncommon English word, ranked #97,759 in English word frequency and used as a noun.

#97,759
frequency rank, English
5
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A former Roman unit of length, equal to 120 Roman feet (about 35.5 m)

Key facts for actus
PropertyValue
Headwordactus
LanguageEnglish
Part of speechNoun
Letters5
Frequency rank#97,759
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “actus” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). actus lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for actus is 5 letters long, classified as a noun. Corpus data places it at rank #97,759 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.

actus doesn't appear in our generated misspelling index, since its letter sequence doesn't invite the usual edit-distance slips. We don't track a confusable pairing for this entry, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From Latin āctus (“a cattle drive; a cattle path; units of length and area”). Doublet of act. The correct English form is actus, spelled A-C-T-U-S.

Definition

  1. 1
    A former Roman unit of length, equal to 120 Roman feet (about 35.5 m)
  2. 2
    A former Roman unit of area, equivalent to a square with sides of 1 actus (about 0.125 ha)

Etymology

From Latin āctus (“a cattle drive; a cattle path; units of length and area”). Doublet of act.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "actus"?
"actus" is spelled A-C-T-U-S.
What does "actus" mean?
As a noun, "actus" means: A former Roman unit of length, equal to 120 Roman feet (about 35.5 m)
What is the origin of the word "actus"?
From Latin āctus (“a cattle drive; a cattle path; units of length and area”). Doublet of act. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “actus”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is A-C-T-U-S - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list