A needle-like structure or spine, especially in botany and zoology; a small sharp point.
From Latin 'acula' or 'aculea,' diminutive plural of 'acus' (needle). Used in scientific nomenclature to describe small pointed structures.
Latin scientific names preserve these ancient forms—when a botanist needs to describe tiny spines on a plant, they still use these centuries-old Latin words, which is why if you learn Latin prefixes and suffixes, you can often guess what new species are like.
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