| 释义 |
lacunaenUK
la·cu·na L0011500 (lə-kyo͞o′nə, -ko͞o′-)n. pl. la·cu·nae (-nē) or la·cu·nas 1. An empty space or a missing part; a gap: "self-centered in opinion, with curious lacunae of astounding ignorance" (Frank Norris).2. Anatomy A cavity, space, or depression, especially in a bone, containing cartilage or bone cells.
[Latin lacūna; see lagoon.]
la·cu′nal adj.lacuna (ləˈkjuːnə) n, pl -nae (-niː) or -nas1. (Printing, Lithography & Bookbinding) a gap or space, esp in a book or manuscript2. a gap or space, esp in a book or manuscript3. (Biology) biology a cavity or depression, such as any of the spaces in the matrix of bone4. (Architecture) another name for coffer3[C17: from Latin lacūna pool, cavity, from lacus lake] laˈcunose, laˈcunal, laˈcunary adj lacunosity nla•cu•na (ləˈkyu nə)
n., pl. -nae (-nē), -nas. 1. a gap or missing part, as in a manuscript; hiatus. 2. Anat. any minute cavity, as in the substance of bone. [1655–65; < Latin lacūna pit] la•cu′nal, adj. Thesaurus| Noun | 1. | lacuna - a blank gap or missing partblankcrack, gap - a narrow opening; "he opened the window a crack" | | 2. |  lacuna - an ornamental sunken panel in a ceiling or domecaisson, cofferpanel - sheet that forms a distinct (usually flat and rectangular) section or component of something |
lacunanounAn interval during which continuity is suspended:break, gap, hiatus, interim, void.TranslationslacunaenUK
lacuna1. Biology a cavity or depression, such as any of the spaces in the matrix of bone 2. another name for cofferLacuna (1) In animals and man, the interstices between elements of tissues and between organs lacking their own walls. In animals with a closed circulatory system, the lacunae are usually filled with lymph; in those with an open system, they are filled with hemolymph. Lacunae that attain relatively large dimensions are called sinuses. In the majority of animals that have a heart and an open circulatory system, the lacunae are usually found on the venous path. (2) In man, depressed areas on the surfaces of organs (for example, the tonsillar cryptae); on the anterior surface of the hip, the lacuna vasorum is a compartment for the passage of the femoral artery and vein, and the lacuna musculorum is a compartment for the passage of the iliopsoas muscle and femoral nerve. (3) In plants, the same as leaf gaps. (4) In linguistics and literary studies, a blank space, an omission, or a missing part of a text. lacuna[lə′kü·nə] (biology) A small space or depression. (histology) A cavity in the matrix of bone or cartilage which is occupied by the cell body. lacunaenUK
lacuna [lah-ku´nah] (L.) 1. a small pit or hollow cavity.2. a defect or gap, as in the field of vision (scotoma). adj., adj lacu´nar.absorption lacuna resorption lacuna.bone lacuna a small cavity within the bone matrix, containing an osteocyte, and from which slender canaliculi radiate and penetrate the adjacent lamellae to anastomose with the canaliculi of neighboring lacunae, thus forming a system of cavities interconnected by minute canals.cartilage lacuna any of the small cavities within the cartilage matrix, containing a chondrocyte.Howship's lacuna resorption lacuna.intervillous lacuna one of the spaces of the placenta occupied by maternal blood, into which the fetal villi project.osseous lacuna bone lacuna.lacuna pharyn´gis a depression of the pharyngeal end of the eustachian tube.resorption lacuna a pit or concavity found in bones undergoing resorption, frequently containing osteoclasts. Similar lacunae also may be found in eroding surfaces of cementum.la·cu·na, pl. la·cu·nae (lă-kū'nă, -kū'nē), 1. A small space, cavity, or depression. 2. A gap or defect. 3. An abnormal space between strata or between the cellular elements of the epidermis. 4. Synonym(s): corneal space [L. a pit, dim. of lacus, a hollow, a lake] lacuna (lə-kyo͞o′nə, -ko͞o′-)n. pl. lacu·nae (-nē) or lacu·nas Anatomy A cavity, space, or depression, especially in a bone, containing cartilage or bone cells.
la·cu′nal adj.Histology A small, hollow chamber that houses an osteocyte in mature bone tissue or a chondrocyte in cartilage tissue
Medspeak A small pit, cavity, defect or gapla·cu·na, pl. lacunae (lă-kū'nă, -nē) 1. [TA] A small space, cavity, or depression. 2. A gap or defect. 3. An abnormal space between strata or between the cellular elements of the epidermis. 4. Synonym(s): corneal space. lacuna Any empty space, missing part, cavity or depression.lacuna a cavity or depression, for example, one of many small spaces between the lamellae of bones that is occupied by individual bone cells. Small canals (canaliculi) radiate from the lacunae and in these are small protoplasmic processes which connect with the osteoblasts in other lacunae. see HAVERSIAN CANAL.la·cu·na, pl. lacunae (lă-kū'nă, -nē) 1. [TA] Small space, cavity, or depression. 2. Gap or defect. 3. Abnormal space between strata or between the cellular elements of the epidermis. lacunaenUK
Related to lacuna: lacuna vasorumlacuna a gap, a case not provided for by a statute or in a document.lacunaenUK
Related to lacuna: lacuna vasorumSynonyms for lacunanoun an interval during which continuity is suspendedSynonyms- break
- gap
- hiatus
- interim
- void
Synonyms for lacunanoun a blank gap or missing partSynonymsRelated Wordsnoun an ornamental sunken panel in a ceiling or domeSynonymsRelated Words |