rhomboidal sinus n.
A dilation of the central canal of the spinal cord in the lumbar region. Also called rhombocele.
noun, plural rhomboidei [rom-boi-dee-ahy] /rɒmˈbɔɪ diˌaɪ/ (Show IPA). Anatomy. 1. either of two back muscles that function to move the scapula. noun (pl) -dei (-dɪˌaɪ) 1. (anatomy) either of two muscles that connect the spinal vertebrae to the scapulae
- Rhomboid fossa
rhomboid fossa n. The floor of the fourth ventricle of the brain, formed by the ventricular surface of the rhombencephalon.
- Rhomboid ligament
rhomboid ligament n. See costoclavicular ligament.
noun, plural rhombuses, rhombi [rom-bahy] /ˈrɒm baɪ/ (Show IPA) 1. an oblique-angled equilateral parallelogram; any equilateral parallelogram except a square. 2. an equilateral parallelogram, including the square as a special case. 3. a rhombohedron. noun (pl) -buses, -bi (-baɪ) 1. an oblique-angled parallelogram having four equal sides Also called rhomb Compare square (sense 1) rhombus […]