| LEPTOCEPHALOUS | • leptocephalous adj. Relating to a leptocephalus. • LEPTOCEPHALOUS adj. having a narrow skull, also LEPTOCEPHALIC.
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| MERCAPTOPURINE | • mercaptopurine n. (Pharmacology) An thiol antimetabolite C5H4N4S that interferes especially with the metabolism of purine… • MERCAPTOPURINE n. an antimetabolite sometimes used in the treatment of acute leukemia.
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| PANLEUCOPENIAS | • PANLEUCOPENIA n. a viral disease of cats marked by a deficiency of white blood cells, also PANLEUKOPENIA. | 
| PANLEUKOPENIAS | • panleukopenias n. Plural of panleukopenia. • PANLEUKOPENIA n. a viral disease of cats marked by a deficiency of white blood cells, also PANLEUCOPENIA.
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| PERIMENOPAUSAL | • perimenopausal adj. Of, pertaining to, or experiencing perimenopause. • PERIMENOPAUSAL adj. relating to the perimenopause.
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| PERIMENOPAUSES | • PERIMENOPAUSE n. the period around the onset of menopause that is often marked by various physical signs (as hot flashes and menstrual irregularity). | 
| PLEURAPOPHYSES | • pleurapophyses n. Plural of pleurapophysis. • PLEURAPOPHYSIS n. a lateral process of a vertebra, with the morphological character of a rib.
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| PNEUMATOPHORES | • pneumatophores n. Plural of pneumatophore. • PNEUMATOPHORE n. an upward-growing respiratory root in swamp plants.
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| PREOCCUPANCIES | • preoccupancies n. Plural of preoccupancy. • PREOCCUPANCY n. an act or the right of taking possession before another.
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| PROPAEDEUTICAL | • propaedeutical adj. Alternative form of propaedeutic. • PROPAEDEUTICAL adj. of or like a propaedeutic, a preliminary study.
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| PSEUDOGRAPHIES | • pseudographies n. Plural of pseudography. • PSEUDOGRAPHY n. unsatisfactory spelling.
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| PSEUDOPREGNANT | • pseudopregnant adj. Of, pertaining to, or undergoing pseudopregnancy. • PSEUDOPREGNANT adj. relating to pseudopregnancy.
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| SUPERIMPOSABLE | • superimposable adj. Able to be superimposed. • SUPERIMPOSABLE adj. capable of being superimposed.
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| SUPERPHENOMENA | • superphenomena n. Plural of superphenomenon. • SUPERPHENOMENON n. an exceptional phenomenon.
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| SUPERPHOSPHATE | • superphosphate n. A fertilizer produced by the action of concentrated sulfuric acid on powdered phosphate rock. • superphosphate n. A phosphate containing the greatest amount of phosphoric acid that can combine with the base.
 • SUPERPHOSPHATE n. acid phosphate.
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| UNDERPOPULATED | • underpopulated adj. Having an insufficient population for economic viability. • UNDERPOPULATED adj. having a lower density of population than is normal or desirable.
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