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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.

Newton said DBA has just surpassed a key technical resistance level, after breaking out of a trendline in early February.

From MarketWatch • Mar. 6, 2026

That’s a notable development, given that the stock has struggled to stay above this secular trendline over the past three years.

From Barron's • Jan. 27, 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

In his view, gold and the S&P 500, recently 6,934, are following the same trendline.

From Barron's • Dec. 26, 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