All articles starting with S

Split-Dalmatia County

Split-Dalmatia County (Splitsko-dalmatinska županija), Croatia's largest county by area at 14,106.40 km2, on the central Adriatic with center Split; 423,407 people (2021), islands Brač, Hvar, Vis, Diocletian's Palace.

Split-flap display

The split-flap display, also called a Solari board or Pragotron, is an electromechanical display showing changeable text by rotating flaps, used on station and airport boards since the 1950s.

Split-level home

A split-level home, also called a split-level or bi-level home, is a single-family house whose floors are staggered at half-story intervals, common in American postwar suburbs from the mid-1950s through the 1970s.

Split-phase electric power

Split-phase electric power is a single-phase AC distribution arrangement in which a center-tapped transformer winding delivers 120/240 VAC over three wires, the standard residential supply in North America.

Sep 29, 2026

Split-plot design

A split-plot design is an experimental design applying hard-to-change factors to large whole plots and easy-to-change factors to nested subplots, giving two randomizations and two error terms.

Split-quaternion

The split-quaternion, also called a coquaternion or para-quaternion, is a four-dimensional non-commutative algebra over the real numbers, defined by James Cockle in 1849, containing zero divisors and isomorphic to 2 × 2 real matrices.

Split-ring resonator

A split-ring resonator (SRR) is a planar electromagnetic structure of metallic rings with small gaps, used as the meta-atom of metamaterials and as a sensing and circuit element.

Split-step Fourier method

The split-step Fourier method (SSFM) is a numerical technique for integrating evolution equations, most prominently the nonlinear Schrödinger equation, by alternating linear substeps in Fourier space with nonlinear substeps in physical space.

Split-system air conditioner

A split-system air conditioner cools (and often heats) through separate outdoor and indoor units linked by refrigerant piping rather than ductwork, avoiding the roughly 30% energy losses of ducted air.

Sep 29, 2026

Split-thickness skin grafting

Split-thickness skin grafting transplants a thin layer of skin, the epidermis plus part of the dermis, from a donor site to cover wounds elsewhere on the body.

Split, Croatia

Split, Croatia's second-largest city (about 161,000 people, 2021 census), grew from Diocletian's Palace, built from 298 AD and UNESCO-listed in 1979; a major Adriatic port and tourist hub in Dalmatia.

Splitboard

Splitboard: a snowboard that splits into two ski-like halves for skinning uphill in the backcountry, then rejoins for the descent. Developed by Brett Kobernik with Voile's Wally Wariakois from 1991; slower uphill than skis but keeps snowboard boots and ride.

Splitgate 2

Splitgate 2, also released as Splitgate: Arena Reloaded, is 1047 Games' free-to-play portal-based arena FPS. Launched June 6, 2025, pulled back to beta in July, relaunched December 17, 2025 to low Steam numbers.

Splitsville (film)

Splitsville (2025 film), also known simply as Splitsville, is a screwball comedy by Michael Angelo Covino and Kyle Marvin starring Dakota Johnson and Adria Arjona about open marriage; Cannes 2025, Neon release August 22, 2025.

Splitting (psychology)

Splitting (psychology): a primitive psychoanalytic defense mechanism dividing people and self-images into all-good and all-bad categories; central to Klein's paranoid-schizoid position, Kernberg's borderline organization, and BPD clinical presentation.

Splitting field

A splitting field of a polynomial over a field F is the smallest field extension of F in which the polynomial factors completely into linear factors.

Splitting functions

Splitting functions are the perturbatively calculable kernels of the DGLAP equations, giving the probability density for one parton to emit another in QCD; the complete three-loop functions have been known since 2004.

Splitting of the Moon

The splitting of the moon (Arabic shaqq al-qamar) is a reported miracle of Muhammad in which the moon divided into two parts, based on Quran 54:1.

Splitting of urinary stream

Splitting of urinary stream (尿線分割, ICD-11 MF50.62; ICD-10-CM R39.13) is the complaint that urine exits as a spray or forked stream rather than a single stream, usually from distal urethral or meatal causes such as adhesion, stricture, or meatal stenosis.

Splitting Up Together

Splitting Up Together is an American ABC sitcom (2018–2019), adapted by Emily Kapnek from the Danish series Bedre skilt end aldrig, in which divorced parents Lena (Jenna Fischer) and Martin (Oliver Hudson) bird-nest, alternating weeks between house and garage apartment, across 26 episodes in two seasons.

Splitwise

Splitwise, also known as Splitwise.com, is a web and mobile application for tracking shared expenses among friends and roommates, founded in 2011 in Providence, Rhode Island, and known for simplifying group debts into the fewest repayments.

Splodgenessabounds

Splodgenessabounds: London punk band formed 1978, led by Max Splodge, pioneers of Garry Bushell's "punk pathetique" style; best known for the 1980 UK No. 7 hit Two Pints of Lager and a Packet of Crisps Please.

Sploof

A sploof is a handheld filter through which a person exhales smoke to reduce its odor, classically a toilet paper roll stuffed with dryer sheets and sold commercially with carbon and HEPA filters.

Splunk

Splunk is a software platform that ingests, indexes, and searches machine-generated data like logs and security events; Cisco acquired it for about $28 billion in 2024.

Sep 29, 2026

SPMD (computing)

SPMD (single program, multiple data) is a parallel programming style in which every processor runs the same program on a different portion of the data.

SPMSQ-E trial

SPMSQ-E trial (NCT02049411), a Mexican double-blind randomized pilot study by Rascon Martinez testing 0.3 mg/kg ketamine during ophthalmic surgery in elderly patients, using the SPMSQ cognitive questionnaire; ketamine improved postoperative SPMSQ scores with no intraocular pressure or hemodynamic increase.

SPN

SPN is the human gene symbol for sialophorin (CD43, leukosialin), a heavily O-glycosylated transmembrane sialomucin on hematopoietic cells regulating T-cell activation, adhesion, and trafficking; linked to Wiskott-Aldrich syndrome; also abbreviates Streptococcus pneumoniae.