Understanding Tetrominos and Their Role in Tetris

A tetromino is a polyomino made up of four cells, and it is used in the popular video game Tetris. The term "tetromino" was coined by the game's creator, Alexey Pajitnov, and it is derived from the Greek words "tetra," meaning four, and "omino," meaning a small thing or particle.

Tetrominos are the building blocks of the game, and they come in seven different shapes: I, J, L, O, S, T, and Z. Each tetromino has a unique shape and can be rotated and moved around the playing field to fit together and clear lines. The goal of the game is to clear as many lines as possible by placing tetrominos in a way that creates a solid line without any gaps.

The word "tetraster" is not commonly used, but it could refer to a player who specializes in playing Tetris at a high level or someone who has mastered the game.