| mother yaw | A large granulomatous lesion, considered to be the initial lesion in yaws, most commonly present on the hand, leg, or foot. Synonym: buba madre, frambesioma, mamanpian, protopianoma. (05 Mar 2000) |
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| pollen mother cell | <plant biology> A diploid plant cell that forms four microspores by meiosis, the microspores give rise to pollen grains in seed plants. (18 Nov 1997) |
| surrogate mother | A woman who has been contracted with to carry a pregnancy for another woman or couple. (05 Mar 2000) |
| eel-mother | <zoology> The eelpout. Source: Websters Dictionary (01 Mar 1998) |
| endosperm mother cell | Cell of the higher plant embryo sac. Contains two polar nuclei and fuses with the sperm cell from the pollen grain. Gives rise to the endosperm. (18 Nov 1997) |