"lineal ancestors" "lineal heirs" "a direct descendant of the king" "direct heredity"
This way of writing may be as swift, lineal, and legible, as the operations of daylight.
They were not..ignorant of lineal perspective.
牛津高階第八版
美國韋氏詞典
Dictionary.com
Free Dictionary
維基百科 (自由的百科全書)