Trellis may refer to: Trellis (agriculture), a structure that supports climbing plants Trellis (graph), a special kind of graph, often used in coding Trellis modulation, also known as "trellis coded modulation", in telecommunications Trellis quantization, a method of improving data compression, often used in lossy video compression Mrs. Trellis of North Wales, a fictional radio correspondent in I'm Sorry I Haven't a Clue Jonathan Whitehead, a composer who sometimes publishes under the nam… (More on Trellis)