# Aa
## Translingual
### Etymology 1

Named to always appear first in alphabetical listings; or alternatively after Pieter van der Aa.

#### Proper noun

Aa f
* A taxonomic genus within the family Orchidaceae – a group of orchids of cool climates in Latin America.

##### Hypernyms

* (genus): Eukaryota – superkingdom; Plantae – kingdom; Viridiplantae – subkingdom; Streptophyta – infrakingdom; Embryophyta – superphylum; Tracheophyta – phylum; Spermatophytina – subphylum; angiosperms, monocots – clades; Asparagales – order; Orchidaceae – family; Orchidoideae – subfamily; Cranichideae – tribe; Cranichidinae – subtribe

##### Hyponyms

* (genus): Aa paleacea – type species; for other species see Aa at The Plant List.

#### References

* Aa (plant) on Wikipedia.Wikipedia
* Aa (Orchidaceae) on Wikispecies.Wikispecies
* Aa (Orchidaceae) on Wikimedia Commons.Wikimedia Commons
* Aa at the Catalogue of Life
* Aa at National Center for Biotechnology Information
* Aa at The Plant List

### Etymology 2

Perhaps from Hawaiian ʻaʻā. This etymology is incomplete. You can help Wiktionary by elaborating on the origins of this term.

#### Proper noun

Aa f
* A taxonomic subgenus within the family Euconulidae – Philonesia (Aa), a group of snails.

##### Hypernyms

* (subgenus): Stylommatophora – order; Helicina – suborder; Limacoidei – infraorder; Trochomorphoidea – superfamily; Euconulidae – family; Microcystinae – subfamily; Philonesia – genus

##### Hyponyms

* (subgenus): Philonesia waiheensis – type species; for other species see Aa (ICZN) on Wikispecies.Wikispecies

#### References

* Aa (ICZN) on Wikispecies.Wikispecies

## English
### Etymology

The river names are ostensibly from Proto-West Germanic *ahu (“river”).

### Proper noun

Aa
* Several waterways in Europe.
** A river in northern France, flowing 93 km from near Bourthes, Pas-de-Calais department into the North Sea near Gravelines, Nord department.
** A small river in the Netherlands, flowing 72 km from near Nederweert, Limburg into the Dieze at 's-Hertogenbosch, North Brabant.
** A tributary of the Möhne river in North Rhine-Westphalia, Germany, part of the Rhine basin.
** A tributary of the Nether river in North Rhine-Westphalia, Germany, part of the Weser basin.
** A tributary of the Werre river in North Rhine-Westphalia, Germany, part of the Weser basin.
* A village in Ida-Viru County, northern Estonia, on the Gulf of Finland.
* A surname from Norwegian.

### Further reading

* Aa in the Encyclopædia Britannica (11th edition, 1911)

## Dutch
### Etymology

The word a (also aa), used as a hydronym. From Proto-Germanic *ahwō (“waters, river”), from Proto-Indo-European *h₂ekʷeh₂ (“water”); both natively, and through Dutch Low Saxon Aa and German Low German Aa (both from Old Saxon aha (“stream”)), and German Aa (from Old High German aha (“stream”)). For more information, see a and its cognate English ea.

### Pronunciation

* IPA: /aː/
* Audio:(file)
* Hyphenation: Aa
* Rhymes: -aː

### Proper noun

Aa f
* The name of dozens of small rivers and streams; also a common element in many derived hydronyms.

#### Derived terms

* Drentse Aa

#### Related terms

* Ee

### Further reading

* Aa (waternaam) on the Dutch Wikipedia.Wikipedia $^{nl}$

## German
### Etymology 1

Onomatopoeic, compare also Kacke.

#### Pronunciation

* IPA: /ˈʔa.ʔa/, /ʔaˈʔa/
* In this word the glottal stop is strictly phonemic and can never be omitted.
* Audio:(file)

#### Noun

Aa n (strong, genitive Aa or Aas, no plural)
* (childish or parentese) feces, poop

##### Alternative forms

* A-a

##### Related terms

* Aa machen

### Etymology 2

From Middle Low German â, from Old Saxon aha, from Proto-Germanic *ahwō. Compare Aue and -ach.

#### Pronunciation

* IPA: /aː/

#### Proper noun

die Aa f (proper noun, usually definite, definite genitive der Aa)
* A left tributary of the Möhne, North Rhine-Westphalia, Germany
* A left tributary of the Nethe, North Rhine-Westphalia, Germany
* A left tributary of the Herre, North Rhine-Westphalia, Germany
* any of several other rivers in Germany, France, Switzerland, Estonia, Latvia, Lithuania, the Netherlands and Belgium

##### Derived terms

* Aasee

#### Proper noun

Aa m or f (proper noun, surname, masculine genitive Aas or (with an article) Aa, feminine genitive Aa, plural Aas)
* a surname

##### Declension

$^1$With an article.

## Norwegian Nynorsk
### Noun

Aa f
* obsolete typography of å

## Tlingit
### Letter

Aa (lower case aa)
* (US) A letter of the Tlingit alphabet, written in the Latin script.

#### See also

* Canada:
* (Latin-script letters) A a, Á á, À à, Â â, Ch ch, Chʼ chʼ, D d, Dł dł, Dz dz, E e, É é, È è, Ê ê, G g, Gw gw, Gh gh, Ghw ghw, H h, I i, Í í, Ì ì, Î î, J j, K k, Kw kw, Kʼ kʼ, Kʼw kʼw, Kh kh, Khw khw, Khʼ khʼ, Khʼw khʼw (L l), Ł ł, Łʼ łʼ (M m), N n (O o), S s, Sʼ sʼ, Sh sh, T t, Tʼ tʼ, Tl tl, Tlʼ tlʼ, Ts ts, Tsʼ tsʼ, U u, Ú ú, Ù ù, Û û, W w, X x, Xw xw, Xʼ xʼ, Xʼw xʼw, Xh xh, Xhw xhw, Xhʼ xhʼ, Xhʼw xhʼw, Y y (Ÿ ÿ), ․
* US:
* (Latin-script letters) A a, Á á, Aa aa, Áa áa, Ch ch, Chʼ chʼ, D d, Dl dl, Dz dz, E e, É é, Ee ee, Ée ée, Ei ei, Éi éi, G g, Gw gw, G̱ g̱, G̱w g̱w, H h, I i, Í í, J j, K k, Kw kw, Kʼ kʼ, Kʼw kʼw, Ḵ ḵ, Ḵw ḵw, Ḵʼ ḵʼ, Ḵʼw ḵʼw, L l, Lʼ lʼ (Ḻ ḻ, M m), N n (O o), Oo oo, Óo óo, S s, Sʼ sʼ, Sh sh, T t, Tʼ tʼ, Tl tl, Tlʼ tlʼ, Ts ts, Tsʼ tsʼ, U u, Ú ú, W w, X x, Xw xw, Xʼ xʼ, Xʼw xʼw, X̱ x̱, X̱w x̱w, X̱ʼ x̱ʼ, X̱ʼw x̱ʼw, Y y (Ÿ ÿ, Y̱ y̱), ․