What does OCTA stand for?

Oceanic Control Area - Aviation (DA)

Octanucleotide - Biochemistry

Octapentadiene - Toxic chemical

Office of the Chemical Industry Trade Advisor (SAUS)

On-Line Corporation Tax Assessment - British

Oregon-California Trails Association (EA)

Ortho-Cyclohexanediaminetetraacetic Acid - Also, DCTA - Organic chemistry

Outsized Cargo Tanker Aircraft