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Definition of Octa
1. Noun. (meteorology) The fraction of the sky that is obscured by clouds, in eighths (one octa means that one eighth of the sky is obscured, two octas that one quarter is obscured, and so on). ¹
¹ Source: wiktionary.com
Definition of Octa
1. okta [n -S] - See also: okta
Medical Definition of Octa
1. An eight-base pair sequence in DNA that has a regulatory role; for example, if it is artificially appended to a gene, it will cause that gene to be preferentially expressed in cells of the beta-lymphocyte lineage. (05 Mar 2000)