Éclairage d'accentuation – Lumière concentrée sur un sujet qui le met en valeur et le fait ressortir de son environnement. Selon le degré de drame souhaité, la lumière d'accentuation doit être au minimum 10 fois supérieure à la lumière générale ou à la lumière ambiante. 
Ampère – Une unité exprimant le débit du courant électrique.
ANSI (Institut national américain de normalisation) – L'organisation qui élabore des directives volontaires et produit des normes de performance pour les industries électriques et autres.
Bruit audible (son) – All fluorescent lamp ballasts produce some noise. Most brand ballasts are sound rated A (up to 75% quieter than magnetic types) and are acceptable for most applications. Care should be taken when mounting the ballast to reduce vibration.
Average Rated Life – An average rating, in hours, indicating when 50% of a large group of lamps have failed, when operated at nominal lamp voltage and current; manufacturers use 3 hours per start for fluorescent lamps and 10 hours per start for HID lamps when performing 
lamp life testing procedures; every lamp type has a unique mortality curve that depicts its average rated life. For Photo-Optic specialty lamps, average rated life refers to the operating period after which on statistical average, 50% of the lamps will perform within their specified values.
