The phase of the moon when it is in opposition to the sun and its full disc is therefore visible. / The moon when it is in opposition to the sun.

(chemistry) The aromatic compound with chemical formula C₁₀H₁₂O₂, an allyl chain-substituted guaiacol of the phenylpropanoids, found in essential oils such as clove, nutmeg, and cinnamon.

(genetics) A chromosome of this kind.

Initialism of bromophenol blue. / (computing, countable) Initialism of BIOS parameter block.