ua

[ˈ(ɣ̞)w̝a]

/[ˈ(ɣ̞)w̝a]/ noun

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

The verdict

“ua” sits in 20 confusable pairs (corpus #18,412) as a noun. The look-alike neighbours are the real trap.

#18,412
frequency rank, Spanish
448
“U” headwords
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Sigla de unidad astronómica, de longitud igual a 149 597 870 700 metros. Equivale aproximadamente a la distancia media entre la Tierra y el Sol.

Corpus desk

Index ES-ua · ua · Spanish

ua · rank #18,412 · 0 variants · 20 confusables

  • FREQ-MID #18,412
  • LEN-SHORT 2 letters
  • VOW-2 2 vowels
  • CONFUS-HIGH 20 pairs
  • VAR-0 0 variants
  • BOOK-MID 448
  • PHOTO-FINISH trust

Nearest frequency peer: trust (-1 rank slots)

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Frequency neighbourhood for “ua”

Lower corpus rank = more everyday usage (inverted bar length for readability)

corpus weight

What this shows Bars show where “ua” sits against the nearest ranked Spanish headwords in the FrequencyWords band, not a reprint of letter-browse containment.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

ua vs un
50% similar
ua vs us
50% similar
ua vs up
50% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for ua
PropertyValue
Headwordua
LanguageSpanish
Part of speechNoun
IPA[ˈ(ɣ̞)w̝a]
Letters2
Frequency rank#18,412
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Dónde se sitúa “ua” en la frecuencia del español

La frecuencia va del puñado de palabras que usamos sin parar (izquierda) a la cola larga que apenas aparece (derecha).uacae aquí:

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

La escala es logarítmica (cada marca ≈ 10× más rara). En la misma franja de rareza aparecen “trust” (#18,411), “unitario” (#18,413), “tripulantes” (#18,410). Source: FrequencyWords open word-frequency list.

Easy to mix with look-alikes

The spelling risk for ua is neighbouring look-alikes ("un", "us", …), not just typos; it is anoun pronounced [ˈ(ɣ̞)w̝a]. Frequency #18,412 among 448 “U” headwords. Gloss: "Sigla de unidad astronómica, de longitud igual a 149 597 870 700 metros. Equivale aproximadamente a la distancia media entre la Tierra y el Sol.".

No misspelling variants are generated for ua in our index, since its letter sequence doesn't invite the usual edit-distance slips. It also participates in 20 confusable-pair relationships, "un", "us", "up", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.

No borrowing history is documented for this entry, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct Spanish form is ua, spelled U-A.

Definition

  1. 1
    Sigla de unidad astronómica, de longitud igual a 149 597 870 700 metros. Equivale aproximadamente a la distancia media entre la Tierra y el Sol.

Recorded use

Wiktionary example

These source excerpts show how ua appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. El Sistema Solar se encuentra situado en uno de los brazos de nuestra galaxia, la Vía Láctea, a unos treinta mil años luz de su centro. Este sistema posee un radio de unas 100,000 unidades astronómicas (ua)

This word in other languages

AU(English)ua(Français)ae(Deutsch)

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 Spanish corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "ua"?
"ua" is spelled U-A. The IPA pronunciation is [ˈ(ɣ̞)w̝a].
What does "ua" mean?
As a noun, "ua" means: Sigla de unidad astronómica, de longitud igual a 149 597 870 700 metros. Equivale aproximadamente a la distancia media entre la Tierra y el Sol.
What words are commonly confused with "ua"?
"ua" is commonly confused with "un", "us", "up". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "ua"?
The IPA (International Phonetic Alphabet) transcription for "ua" is [ˈ(ɣ̞)w̝a]. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "ua" come from?
"ua" is a Spanish word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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.

What to do next

You've looked up "ua". Here's where to go from here.

  • "ua" maps to 20 confusable pairs in this vintage; the highest-scored is "un". View pair
  • Usage frequency rank #18,412 among Spanish headwords in this corpus. Corpus statistics
  • Browse more Spanish words in the "U" letter cohort. U–Z browse

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.

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