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| English | Sinhala |
| High Contrast | අධි ප්රභේදනය (A feature that heightens the color contrast of some text and images on your computer screen, making those items more distinct and easier to identify) |
| high-definition DVD | අධි-විභේදන DVD (A high definition optical disc format which uses a smaller focus blue-violet 405 nm laser allowing higher precision and storage density. A competitor to Blu-ray Disc) |
| high-definition multimedia interface | අධි-විභේදන බහුමාධ්ය අතුරුමුහුණත (A digital interface specification for delivering digital content and connecting consumer electronic devices) |
| high-density multichip interconnect | අධි-ඝනත්ව බහු-චිප අතුරු-සබැඳිය (A digital interface specification for delivering digital content and connecting consumer electronic devices) |
| high-low lines | ඉහළ-පහළ රේඛා (In 2-D line charts, lines that extend from the highest to the lowest value in each category. High-low lines are often used in stock charts) |