deltoid leaf
- noun
- /ˈdɛl.tɔɪd liːf/
- Specialized
- The cottonwood tree is easily identified by its deltoid leaf shape.
Examples
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The deltoid leaf of the sycamore is both broad and sharply pointed.
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You can identify the cottonwood tree by its characteristic deltoid leaf that has a broad base and pointed tip.
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Botanists often describe leaves as ovate, lanceolate, or deltoid leaf depending on their form.
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The deltoid leaf is easily recognizable.
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Many plants have a deltoid leaf shape.
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The deltoid leaf of the sycamore tree is often used in landscaping due to its distinctive shape.
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In botanical studies, the deltoid leaf is noted for its triangular appearance and is classified among other leaf forms.
Surface Forms
Morphology
The meaning is directly compositional: an adjective meaning 'delta-shaped/triangular' plus 'leaf' yields a leaf that is triangular in shape. As an adjective+noun combination following standard descriptive patterns (and with similar constructions in many languages), a learner who knows both constituent meanings can readily infer the MWE's meaning.
Etymology
The noun deltoid leaf comes from the Greek letter delta, which is a triangle. Botanists use deltoid to describe a leaf that looks like that triangle, broad at the base with a point at the tip, so the name means 'triangle-shaped leaf'.