Ceiling fan means a nonportable device that is suspended from a ceiling for circulating air via the rotation of fan blades. For the purpose of this definition:
(1) Circulating air means the discharge of air in an upward or downward direction. A ceiling fan that has a ratio of fan blade span (in inches) to maximum rotation rate (in revolutions per minute) greater than 0.06 provides circulating air.
(2) For all other ceiling fan related definitions, see appendix U to this subpart.
10 CFR § 430.2
For purposes of this part, words shall be defined as provided for in section 321 of the Act and as follows