trendline

American

[trend-lahyn] / ˈtrɛndˌlaɪn /

Or trend line

noun

an upward or downward line on a chart indicating movements of average prices, as of stocks, over a period of time.

Etymology

Origin of trendline

1910–15 for more general sense; trend + line ¹

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.

A decisive breakdown would be a bearish catalyst supporting a deeper correction in the months ahead, targeting long-term trendline support near $264.

From Barron's • Apr. 10, 2026

“A decisive break below this trendline would not only point to continued staples leadership but may also signal a broader shift toward rising risk aversion among investors,” he said.

From Barron's • Feb. 26, 2026

The key level to watch is $65.50/bbl, near the top of the daily Ichimoku cloud and the declining trendline connecting the highs from July and September in 2025.

From The Wall Street Journal • Jan. 13, 2026

The r-squared of that trendline is 0.003, barely different than zero.

From MarketWatch • Oct. 27, 2025

Attendance is following a similar trendline — much better but still in need of improvement.

From Los Angeles Times • Aug. 12, 2024

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023