n.
a paper binding method using a plastic spine (see Image 1).
Type: 5. Frequency — This term is virtually limited to Canada (see Chart 1). This type of binding is also called '(plastic) comb binding', the commonly used term in other countries (see Chart 2). Cerlox is an alternate spelling of 'surelox', which is most common in Canada (see Chart 3), but used significantly less often than Cerlox.
See also COD-2, s.v. "Cerlox", which is labeled "proprietary Cdn".