| Undine | Astra | |
|---|---|---|
| Meaning | Of the waves | Of the stars |
| Origin | latin | latin |
| Gender | Girl | Girl |
| Pronunciation | un-DEEN | AS-truh |
| Syllables | 2 | 2 |
| First appeared | 0 | 0 |
| Peak year | 1924 (10) | 2022 (69) |
| In 2025 | 0 | 0 |
| Trend | Steady | Rising |
Source: US Social Security Administration.
| Decade | Undine | Astra |
|---|---|---|
| 2020s | 0 | 350 |
| 2010s | 0 | 115 |
| 2000s | 0 | 31 |
| 1990s | 0 | 37 |
| 1980s | 0 | 79 |
| 1970s | 0 | 118 |
| 1960s | 0 | 19 |
| 1950s | 0 | 5 |
| 1940s | 0 | 17 |
| 1930s | 6 | 0 |
| 1920s | 43 | 0 |
| 1910s | 46 | 0 |
From Latin unda 'wave'. Popularised by the water-nymph heroine of Friedrich de la Motte Fouque's 1811 novella Undine; the undines are elemental water spirits.
From Latin 'astra', the plural of 'astrum' ('star'), itself from Greek 'astron'. It evokes the phrase 'ad astra' ('to the stars').
Undine and Astra are given to a similar number of US babies today.
Undine means Of the waves (latin origin), while Astra means Of the stars (latin origin).
In US records, Undine first appears in 0 and Astra in 0, so Undine has the longer recorded history.