signet ring sign

signet ring sign
in diagnostic imaging, a ring-shaped appearance caused by a pathologic process, such as that seen on radiographs of the wrist in scapholunate dislocation or that caused by a dilated bronchus on computed tomography of the lung. See also cortical ring s.

Medical dictionary. 2011.

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  • Signet ring — Signet Sig net, n. [OF. signet a signet, F., a bookmark, dim. of signe. See {Sign}, n., and cf. {Sennet}.] A seal; especially, in England, the seal used by the sovereign in sealing private letters and grants that pass by bill under the sign… …   The Collaborative International Dictionary of English

  • cortical ring sign — ring shaped appearance of the cortex of the scaphoid bone on radiography of the wrist, caused by abnormal orientation of the scaphoid following disruption of the scaphoid ligament; a sign of scapholunate dislocation. Called also signet ring s …   Medical dictionary

  • Signet — Sig net, n. [OF. signet a signet, F., a bookmark, dim. of signe. See {Sign}, n., and cf. {Sennet}.] A seal; especially, in England, the seal used by the sovereign in sealing private letters and grants that pass by bill under the sign manual;… …   The Collaborative International Dictionary of English

  • signet — I. noun Etymology: Middle English small seal, signet ring, from Anglo French, diminutive of signe sign, seal Date: 14th century 1. a seal used officially to give personal authority to a document in lieu of signature 2. the impression made by or… …   New Collegiate Dictionary

  • signet — n. 1 a seal used instead of or with a signature as authentication. 2 (prec. by the) the royal seal formerly used for special purposes in England and Scotland, and in Scotland later as the seal of the Court of Session. Phrases and idioms: signet… …   Useful english dictionary

  • signet — late 14c., small seal (especially one on a finger ring), from O.Fr. signet a small seal, dim. of signe sign (see SIGN (Cf. sign)) …   Etymology dictionary

  • privy signet — Signet Sig net, n. [OF. signet a signet, F., a bookmark, dim. of signe. See {Sign}, n., and cf. {Sennet}.] A seal; especially, in England, the seal used by the sovereign in sealing private letters and grants that pass by bill under the sign… …   The Collaborative International Dictionary of English

  • Writer to the signet — Signet Sig net, n. [OF. signet a signet, F., a bookmark, dim. of signe. See {Sign}, n., and cf. {Sennet}.] A seal; especially, in England, the seal used by the sovereign in sealing private letters and grants that pass by bill under the sign… …   The Collaborative International Dictionary of English

  • signet — /sig nit/, n. 1. a small seal, as on a finger ring. 2. a small official seal for legal documents, contracts, etc. 3. an impression made by or as if by a signet. v.t. 4. to stamp or mark with a signet. [1300 50; ME < OF (see SIGN, ET); cf. ML… …   Universalium

  • signet — sig•net [[t]ˈsɪg nɪt[/t]] n. 1) a small seal, as on a finger ring 2) a small official seal for legal documents, contracts, etc 3) an impression made by or as if by a signet 4) to stamp or mark with a signet • Etymology: 1300–50; ME < OF (see… …   From formal English to slang

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