Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z siglos A silver coin of Achaemenid Persia worth one twentieth of a daric and weighing about 5.6 grams. siglum A letter or other symbol that stands for a name or word; specifically, one used in a modern literary work to refer to an early version of a text. sigma The eighteenth letter of the Classical and Modern Greek alphabets (Σ, σ), the twentieth letter of Old and Ancient. sigmalike Characteristic of a structure composed of sigma bonds. Sigman A surname. sigmaspire A spicule (of a sponge) that has a sigmoid, twisted form sigmate Shaped like the Greek letter sigma. sigmatic Having the consonant s added to the root in order to form a tense or case stem. sigmatics The study of the relationships between symbols and the things they represent. sigmation The process of sigmating; addition of a sigma. sigmatism A lisp. sigmatoid Synonym of sigmoid. sigmatropic Describing any rearrangement reaction in which single bonds are broken and others are formed sigmatropically In a sigmatropic manner. sigmatropy sigmatropic reaction sigmavirus Any virus of the genus Sigmavirus, affecting dipterans. SIGMET A weather advisory concerning the safety of all aircraft. sigmodal A barbiturate derivative formerly used in surgical anesthesia. sigmodont Any of the Sigmodontinae subfamily of rodents, including New World rats and mice. sigmodontine Any rodent of the subfamily Sigmodontinae sigmoid Semi-circular, like the uncial or lunate sigma (similar to English C). sigmoidal sigmoid; S-shaped. sigmoidality The condition of being sigmoidal sigmoidally In a sigmoidal manner. sigmoidectomy A colectomy in which the sigmoid colon is removed. sigmoideum sigmoid colon sigmoidicity The quality of being sigmoid sigmoidin Any of a class of flavanones found in Erythrina sigmoidea. sigmoiditis inflammation of the sigmoid colon sigmoidity The condition of being sigmoid sigmoidocele A hernia of the sigmoid colon. sigmoidopexy surgery to fix the sigmoid colon in place sigmoidoscope An instrument used for examining the sigmoid colon. sigmoidoscopic Relating to the type of examination of the colon. sigmoidoscopy Internal examination of the sigmoid colon sigmoidostomy An operation involving the formation of an artificial opening from the sigmoid colon through the abdominal wall. Sigmon A surname. Sigmund Term of address for a person who appears to be dispensing psychoanalysis. sigmurethrous Of or pertaining to the informal taxonomic group Sigmurethra of molluscs. sign A visible fact that shows that something exists or may happen. signability The quality of being signable. signable That can be signed (represented in sign language). signage Signs, particularly those imparting commercial, directional, or road traffic information, taken collectively. signal A sequence of states representing an encoded message in a communication channel. signalase A peptidase that cleaves signal peptides from secreted proteins cotranslationally signalee The person toward whom a signal is directed. signaler Someone who signals. signalese Words and abbreviations used by radio operators and other signalmen to clarify the letters being sent and received, such as the RAF phonetic alphabet. signaletic Related to or involving the Bertillon system of anthropometry. signaletics The Bertillon system of anthropometry. Signalgate A security incident around the United States government discussing classified information on unsecured devices via the messaging app Signal, publicized due to the chief editor of a news magazine having been added by the National Security Advisor on the 13th of March 2025 to a group planning military strikes against the Houthis. signalgrass A broadleaf weed Brachiaria platyphylla signalhood The property of being a signal. signalic Of, or related to signals. signaling The sending of a signal (often with reference to a biochemical signal). signalism An international avant-garde literary and art movement rooted in Serbian culture. signalist Someone who makes signals, or communicates information by signalling. signality importance; remarkability. signalization The process of signalizing; characterization or differentiation signalize To distinguish, to make noteworthy. signaller One who signals. signalless Without any signals. signalling The use of signals in communications, especially the sending of signals in telecommunications. signally In a signal manner; conspicuously. signalman Somebody employed to operate the signals and points of a railway. signalmaster The supervisor of a signalman on a railway. signalment The act of signalling, or of signalizing. signalolipidomics signalomic lipidomics signalome All the signalling pathways of an organism or cell. signalomic Relating to signalomes signalosome Any of a group of proteins, complexes of which are involved in the regulation of protein degradation. signalperson A signalman or signalwoman. signalplex A combination of two or more signals signalwave A microgenre of vaporwave; its visual aesthetic centers around the lo-fi, nostalgic, and often uncanny experience of channel surfing through 1980s and 1990s television broadcasts. signalwoman A woman employed to operate the signals and points of a railway. signare A mulatto French-African woman of the island of Gorée or the city of Saint-Louis in French Senegal during the 18th and 19th centuries. signary The set of characters in a writing system: alphabet, syllabary, etc. signate Having definite colour markings; bearing spots resembling letters. signation A sign given, especially of a cross signator A signatory: someone who signs something. signatory One who signs or has signed something. signatural Of or relating to a signature. signature A person's name, written by that person, used as identification or to signify approval of accompanying material, such as a legal contract. signatureless Without a signature. signaturist A holder of the doctrine of signatures impressed upon objects, indicative of character or qualities. signback A back of a sign. signboard A board carrying a sign, or on which signs may be posted. signboarded Marked with signboards. signboarding The use of signboards. signcrypt To employ signcryption signcryption A system of encryption that includes a digital signature signe an asteroid discovered by Max Wolf on October 22, 1900 signed Having a signature; endorsed. signedness The state or condition of being signed. signee One who is signed (signed up, enlisted) by someone else; thus, one who signs a contract, especially in athletic contexts. signer One who signs their name (applies their signature to something). signet An object (especially a ring) formerly used to impress a picture into the sealing wax of a document as a proof of its origin. signeted Stamped or marked with a signet. signholder One who, or that which, holds a sign. signiconic Characterized by intricate variations of typography, page layout, color, etc. that reflect spaces and events in the narrative. signifer Bearing signs. signifiable Capable of being signified. signifiance signification, meaning signific Representing meaning. significance The extent to which something matters; importance significancy Significance. significand The part of a floating-point number that contains its significant digits. significant Signifying something; carrying meaning. significantly In a significant manner or to a significant extent. significantness The quality of being significant. significate One of several things signified by a common term. signification The act of signifying, or something that is signified; significance. significative That tends to signify or indicate; indicative significatively In a significative manner. significativeness The quality of being significative. significativity The condition of being statistically significant. significator One who, or that which, signifies. significatory significant; meaningful; having signification significatrix A female significator. significavit A writ issuing out of chancery, upon certificate given by the ordinary, of a man's standing excommunicate by the space of forty days, for the laying him up in prison till he submit himself to the authority of the church. significs A proposed linguistic science based on the use of the exact significance of terms and concepts. signified The concept, object or person that is referred to by a sign or signifier. signifier Something or someone that signifies, makes something more significant or important. signify To create a sign out of something. signifying signification signifyingly In a signifying manner. signing The act of concluding a contract, especially by an athlete or entertainer with a company. signiorize To exercise dominion; to seigniorize. signiorship State or position of a signore. signiphorid Any member of the Signiphoridae of parasitic wasps. signist Synonym of signpainter. signless Without a sign or signs. signlessness Absence of signs. signlike Resembling or characteristic of a sign. signmaker A maker of signs. signmaking The making of signs (in various senses). signman A person employed to produce signs; a signpainter or signwriter. signoff The act or process of signing off (approving with a signature). signora Mrs; madam; title of address or respect for women in Italy. signore A courtesy title for Italian men. Signorelli A surname. Signoret A surname from French. signoria lordship, especially in medieval Italian city states signorina A courtesy title for an unmarried woman of Italian origin. signorise seigniorize. signorship Polite form of address for an Italian man. signory A territory or domain, especially under a feudal lordship. signpainter Someone who paints signs. signpost A post bearing a sign that gives information on directions. signposter One who signposts, or directs people to some resource.