In surveying and real estate law, the part of a property that borders on another property or public way; the line or point where properties meet.
From abut + -al (suffix forming nouns from verbs), a legal and surveying term that emerged to describe the specific technical concept of where properties border.
Property law created 'abuttal' because lawyers needed a single word for 'the part of a property that touches something else'—it's faster than explaining the concept every time, showing how specialized vocabularies evolve from practical need.
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