As used in this chapter, except as the context may require otherwise:

(1) “Department” means the Department of Public Health;

(2) “Commissioner” means the Commissioner of Public Health;

(3) “Hearing aid” means any wearable instrument or device designed for or offered for the purpose of aiding or compensating for impaired human hearing, and any parts, attachments or accessories, excluding batteries, earmolds and cords;

(4) “Practice of fitting hearing aids” means the comprehensive measurement of human hearing and determination and use of appropriate amplification related to hearing disorders, including, but not limited to, screening for the preexisting otological disorders listed in § 20-403, the making of impressions for earmolds, the making of selections and adaptation of hearing aids and the instruction and counseling in their use;

(5) “Licensed hearing instrument specialist” means a person, other than an audiologist or physician, licensed to engage in the practice of fitting or selling hearing aids;

(6) “Sell” or “sale” means any transfer of title or of the right to use by lease, or any other contract, for a consideration, excluding wholesale transactions with distributors or hearing instrument specialists;

(7) “Otolaryngologist” means a physician licensed under chapter 370 who is certified by the American Board of Otolaryngology and includes physicians in training programs approved by the American Board of Otolaryngology;

(8) “Audiologist” means a person who is licensed under sections 20-395a to 20-395g, inclusive, as an audiologist;

(9) “Used hearing aid” means a hearing aid that has been previously sold, leased or rented to a hearing aid user.