| 1. | the syllable used for the sixth tone of a diatonic scale. |
| 2. | (in the fixed system of solmization) the tone A. Compare sol-fa (def. 1). |
La
The symbol for the element lanthanum.
| lanthanum (lān'thə-nəm) Pronunciation Key
Symbol La A soft, malleable, silvery-white metallic element of the lanthanide series. It is used to make glass for lenses and lights for movie and television studios. Atomic number 57; atomic weight 138.91; melting point 920°C; boiling point 3,469°C; specific gravity 5.98 to 6.186; valence 3. See Periodic Table. |
LAS
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