| phytotoxin | A substance similar in its properties to an extracellular bacterial toxin. Synonym: plant toxin. Origin: phyto-+ G. Toxikon, poison (05 Mar 2000) |
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| phytotrichobezoar | A mixed hair and food ball, consisting of vegetable fibres, seeds and skins of fruits, and animal hair that are matted together to form a ball in the stomach of man or animals, especially ruminants. Synonym: phytotrichobezoar. Origin: tricho-+ G. Phyton, plant, + bezoar (05 Mar 2000) |
| phytozoaria | <zoology> Same as Infusoria. Origin: NL. See Phytozoon. Source: Websters Dictionary (01 Mar 1998) |
| phytozoon | Origin: NL, fr. Gr. + an animal. <zoology> A plantlike animal. The term is sometimes applied to zoophytes. Source: Websters Dictionary (01 Mar 1998) |
| phytyl | The radical, -CH2-CH==C(CH3)-CH2-[-CH2-CH2-CH(CH3)-CH2-]-3H, found in phylloquinone (vitamin K1); a tetraprenyl radical, reduced in 3 of the 4 prenyl groups. (05 Mar 2000) |
| phytyl alcohol | Long chain fatty alcohol (C20) forming part of chlorophyll, attached to the protoporphyrin ring by an ester linkage. (18 Nov 1997) |