Webster's English Dictionary

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scalare

sca.la.re \sk*-'la(*)r-e-, -le(*)r-, -'la:r-\ n [NL (specific epithet), fr. 
   L, neut. of scalaris; fr. the barred pattern]on its body : a black and 
   silver laterally compressed So. American cichlid fish (Pt erophyllum 
   scalare) popular in aquariums