Synthesises

Synthesises is the third-person singular present tense of the verb synthesise. In British English, synthesise means to combine components to form a new whole or a chemical compound. The related American English spelling is synthesizes, with the base verb spelled synthesize. The noun synthesis refers to the act or process of combining elements.

The term is widely used across science, engineering, and everyday language. In chemistry, to synthesise a compound means to construct it from simpler starting materials through chemical reactions. In biology and biochemistry, cells synthesize proteins, nucleic acids, and other biomolecules. In data science and information synthesis, researchers synthesise information from multiple sources to produce a unified dataset, result, or interpretation. In music technology, producers synthesize sounds using electronic instruments. In philosophy or logic, synthesis describes the integration of ideas into a broader theory or framework.

Etymology traces the word to the Greek sunthesis, meaning putting together. The concept contrasts with analysis, which involves breaking a system into parts, and with synthesis in chemistry or biology, which emphasizes construction rather than deconstruction.

See also synthesis, synthesizer, synthetic. Note that American usage generally prefers synthesize as the verb form, while British English commonly uses synthesise and synthesises. The core idea across contexts remains the creation of something new by combining existing elements.