lacuna

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la·cu·na / ləˈk(y)oōnə/ • n. (pl. -nae / -nī; -nē/ or -nas ) an unfilled space or interval; a gap: the journal has filled a lacuna in Middle Eastern studies. ∎  a missing portion in a book or manuscript. ∎  Anat. a cavity or depression, esp. in bone. DERIVATIVES: la·cu·nal / ləˈk(y)oōnl/ adj. lac·u·nar·y / ˈlakyəˌnerē; ləˈk(y)oōnərē/ adj. la·cu·nate / -ˌnāt; -nit; ˈlakyəˌnāt/ adj. la·cu·nose / ˈlakyəˌnōs; -ˌnōz/ adj. ORIGIN: mid 17th cent.: from Latin, ‘pool,’ from lacus ‘lake.’

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lacunabelladonna, Connor, donna, goner, gonna, honour (US honor), Maradona, Mashona, O'Connor, Shona, wanna •corner, fauna, forewarner, Lorna, Morna, mourner, sauna, scorner, suborner, warner •softener • Faulkner •downer, uptowner •sundowner •Arizona, Barcelona, boner, condoner, corona, Cremona, Desdemona, donor, Fiona, groaner, Iona, Jonah, kroner, Leona, loaner, loner, moaner, Mona, owner, Pamplona, persona, postponer, Ramona, stoner, toner, Valona, Verona, Winona •landowner • homeowner • shipowner •coiner, joiner, purloiner •crooner, harpooner, lacuna, lacunar, lampooner, Luna, lunar, mizuna, Oona, oppugner, Poona, pruner, puna, schooner, spooner, Tristan da Cunha, tuna, tuner, Una, vicuña, yokozuna •honeymooner • Sunna • Brookner •koruna

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lacuna (pl. lacunae). Literally a gap, applied to a Classical coffer in a ceiling, cornice-soffit, or any flat, level horizontal underside, a coffer under a cupola being a caisson. Lacunae are often elaborately ornamented with egg-and-dart, bead-and-reel, etc., and laquear is used to express the effect of mouldings separating the margins of panels in coffering.

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lacuna A gap between cells, often filled with air. See LEAF GAP; compare LUMEN.

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lacuna XVII. — L. lacūna pool, cavity, f. lacus LAKE1.

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lacuna an unfilled space or interval; a gap; a missing portion in a book or manuscript. The word comes (in the mid 17th century) from Latin, ‘pool’, from lacus ‘lake’.

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lacuna A gap or cavity in the tissues of an organism; for example, the hollow centre of certain plant stems or any of the small cavities in bone in which the bone-forming cells are found.

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lacuna (lă-kew-nă) n. (pl. lacunae) (in anatomy) a small cavity or depression.