trendline

American  

[trend-lahyn] / ˈtrɛndˌlaɪn /

Or trend line

noun

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

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Etymology

Origin of trendline

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

Example Sentences

The next warning sign flashed after the previous technical support at the November 2025 low, as well as at rising longer-term trendline that started off the October 2023 low — they were both at around the same level — definitively gave way after the Iran conflict started.

From MarketWatch

The key is the third top, as the XLF had seemed to find support at the first trendline, but failed to resume the rally to a new high before support gave way.

From MarketWatch

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

From MarketWatch

If and when that level is reached, we can reassess at that long-term secular trendline.

From Barron's

A break below that ratio-chart trendline against the State Street Financial Select Sector ETF would not only pressure Goldman itself, but could also signal broader market weakness.

From Barron's