horizontal line
noun
a line that is parallel to the base of a surface or plane. Compare vertical line.
horizontal lines
-
pluralof horizontal line.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“Some of those fixed dramatic horizontal lines do become worse because people are literally spending hours on their phone and looking down,” said Dr. Melanie Palm, a cosmetic dermatologist based in Solana Beach, Calif.
From The Wall Street Journal ● Mar. 27, 2026
Those support levels are marked with red horizontal lines on the SPX chart.
From MarketWatch ● Oct. 30, 2025
You may have seen it before: When two identical horizontal lines are capped with arrowheads pointing either inward or outward, the line with inward-facing arrowheads looks longer, even though it’s not.
From Slate ● Aug. 24, 2025
Players have to arrange falling different shapes, each composed of four blocks, to make them fit together like a jigsaw into horizontal lines that vanish when completed.
From BBC ● Oct. 8, 2024
The writing is indecipherable, not because Margo’s handwriting is bad, but because on top of the horizontal lines of text, writing also goes vertically down the page.
From "Paper Towns" by John Green
