2T

2t is a designation that appears in several domains. The most common usages are as shorthand for two-stroke engines and as a toddler clothing size. In many contexts the designator is written as 2T, though lowercase forms may also be seen depending on the source.

Two-stroke engines: In catalogs and product names, two-stroke (2T) engines complete a power cycle in each crankshaft revolution, giving a high power-to-weight ratio and a simpler mechanism than four-stroke engines. They are widely used in motorcycles, chainsaws, leaf blowers, and some outboard motors. Lubrication is typically provided by premixed fuel or by a separate oil system; neither requires a dedicated camshaft or valve train. Because of the rapid cycle, 2T engines can emit more exhaust pollutants and often require more frequent maintenance than four-stroke engines.

Toddler clothing: In United States sizing, 2T is a toddler size for children around ages 2 to 3. It sits between infant sizes (such as 24 months) and early-child sizes (3T, 4T) in many brands. Sizing varies by manufacturer, so buyers should check measurements for chest, waist, and inseam or consult the brand’s size chart.

Other uses are context-dependent and less common; 2t may appear in product codes or model names in various industries.