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The perfume made from this plant. Patchouly camphor (Chem.), a substance homologous with and resembling borneol, found in patchouly oil.

A foliar part of a plant; any organ homologous with a leaf, or produced by metamorphosis of a leaf.

Homologous with a leaf; as, the sepals, petals, stamens, and pistils are phyllous organs.

A nitrogenous base homologous with pyridine, obtained from coal tar as an oily liquid, C11H17N; also, any one of the group od metameric compounds of which rubidine is the type.

One of the higher alcohols of the methane series, homologous with ethal, and found in small quantities as an ethereal salt of stearic acid in spermaceti.

Pertaining to, or designating, an acid obtained by the distillation of terebic acid, and homologous with citraconic acid.

Of, pertaining to, or designating, an acid, C8H12O4 (called also terpentic acid), homologous with terebic acid, and obtained as a white crystalline substance by the oxidation of oil of turpentine with chromic acid.

Of, pertaining to, or designating, an acid, C3H3.CO2H, of the acetylene series, homologous with propiolic acid, obtained as a white crystalline substance.

An alkaloidal ureide, C7H8N4O2, homologous with and resembling caffeine, produced artificially, and also extracted from cacao and chocolate (from Theobroma Cacao) as a bitter white crystalline substance; -- called also dimethyl xanthine.

Of, pertaining to, or designating, an acid, C4H7CO2H (called also methyl crotonic acid), homologous with crotonic acid, and obtained from croton oil (from Croton Tiglium) as a white crystalline substance.

A hydrocarbon, C6H5.CH3, of the aromatic series, homologous with benzene, and obtained as a light mobile colorless liquid, by distilling tolu balsam, coal tar, etc.; -- called also methyl benzene, phenyl methane, etc.

arbon obtained by the dry distillation of tropine with quicklime. It is regarded as being homologous with dipropargyl.

Pertaining to, or designating, an acid C11H20O2, homologous with acrylic acid, and obtained as a white crystalline substance by the distillation of castor oil.

ne and that related series of unsaturated hydrocarbons with which the allyl compounds are homologous.