This book presents the onomasiological approach to word formation and applies it to neoclassical formations, using data taken from English and Russian medical terminology. The phenomenon of neoclassical formations is challenging for morphological theory because it raises questions about determining its boundaries as a distinct category. The difficulties of differentiating between compounding and affixation, between blending and compounding, and between word formation and borrowing represent key problematic areas here. The basic underlying hypothesis considered in this book is that the position