lobule

• lobula
• lobulus

From lobe +‎ -ule (diminutive suffix).

• (Received Pronunciation) IPA^(key): /ˈlɒb.juːl/

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• (General American) IPA^(key): /ˈlɑb.jul/
• Rhymes: (Received Pronunciation) -ɒbjuːl, (General American) -ɑbjul

lobule (plural lobules)

1. Diminutive of lobe:
   1. (anatomy) A small lobe; a subdivision of a lobe.
   2. (botany) In liverworts with bilobed leaves, the smaller of the two lobes, sometimes modified to form a sac.
      • 1992, Rudolf M[athias] Schuster, The Hepaticae and Anthocerotae of North America: East of the Hundredth Meridian, volume V, New York, N.Y.: Columbia University Press, →ISBN, page 4:

        The Jubulaceae have a leaf whose lobule, usually transformed into a water-sac, is normally very narrowly attached to the stem and to the dorsal lobe; indeed some Frullania taxa reproduce vegetatively by dropping the dorsal lobes, but not the lobules, and Neohattoria has caducous lobules but persistent lobes.

• lobular (adjective)

• “lobule”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “lobule”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.

• boulle