head lettuce

any variety of the lettuce subspecies Lactuca sativa capitata, having leaves that grow in a dense rosette, especially iceberg lettuce and Boston lettuce.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Example sentences
Leafhoppers may also damage head lettuce directly, although leaf lettuce is less sensitive.
Treatments were applied to head lettuce plants before the onset of disease.
Varieties grown include head lettuce, leaf lettuce, and romaine.
Seven cultivars or romaine lettuce were compared for head lettuce production for the dining halls.
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