acerose

¹ American  

[as-uh-rohs] / ˈæs əˌroʊs /

adjective

Botany.

1. needle-shaped, as the leaves of the pine.

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acerose ² American  

[as-uh-rohs] / ˈæs əˌroʊs /

adjective

1. resembling chaff.

2. mixed with chaff.

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acerose British  

/ ˈæsəˌrəʊs, -ˌrəʊz /

adjective

1. shaped like a needle, as pine leaves

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Etymology

Origin of acerose¹

1775–85; special sense of acerose ², by misattribution of acer- to Latin acus needle, whose stem is acu- and not acer- ( cf. acute)

Origin of acerose²

1715–25; < Latin acerōsus, equivalent to acer- (stem of acus ) chaff + -ōsus -ose ¹