This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

ad. in a biological manner

ad. with regard to biology

In a biological manner; according to the doctrines or principles of biology.

ad. with respect to biology

"JACKSON: And so we focused on some groups that were what we called biologically plausible."

chronologically    ecologically    epidemiologically    ideologically    logically