Syntaxiom

lightyear

/lˈaɪtjɪɹ/ noun

Alternative spelling of light year.

Word Origin A compound of light and year. Light from Proto-Germanic 'leuhtam' (brightness) and year from 'jērą' (season). A lightyear is the distance light travels in a year. The PIE root *leuk- gives us lucid, illuminate, and luminous. The root *yér- gives us year, hour (via Greek 'hora' season), and horoscope. So lightyear literally measures time and brightness.

noun Alternative spelling of light year. countable

The nearest star is about four lightyear away from our solar system.

(名词) 光年 【光年（异拼写法）】

距离太阳系最近的恒星大约有四光年远。

(sustantivo) años luz [Variante ortográfica de año luz.]

La estrella más cercana está a unos cuatro años luz de nuestro sistema solar.

(nom) année-lumière [Orthographe alternative de light year : unité de distance astronomique correspondant à la distance parcourue par la lumière en un an.]

L'étoile la plus proche se trouve à environ quatre lightyears de notre système solaire.

(Substantiv) Lichtjahr [**Lightyear** *Substantiv, Neutrum* – alternative Schreibweise von *Lichtjahr*: die Strecke, die Licht in einem Jahr zurücklegt (ca. 9,46 Billionen Kilometer), als astronomische Maßeinheit.]

Der nächste Stern ist etwa 4,2 **lightyears** von der Erde entfernt.

(名詞) 「light year（光が 1 年間に進む距離を表す天文単位）の別綴り。

最寄りの星は私たちの太陽系から約四光年離れている。

(substantivo) anos-luz [Grafia alternativa de ano-luz.]

A estrela mais próxima está a cerca de quatro anos-luz do nosso sistema solar.

Synonyms: light year parsec astronomical unit distance unit cosmic measure
Word parts: light + year

Related words

lighten lighter lightness lightly yearly yearling

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