block

1. A substantial, often approximately cuboid, piece of any substance.dated

2. A substantial, often approximately cuboid, piece of any substance.

3. A substantial, often approximately cuboid, piece of any substance.Examples: "But there are many queen bee configurations in which the debris is neutralized, including placement of a block or eater near the bee's turnaround point, or placing two queen bees in a line or at right angles in various positions and phases."; "Perhaps the simplest puffer known is the following period 20 puffer based on the period 20 spaceship, which creates blocks."; "Blocks have a couple of unusual properties: they are cleanly destroyed by an incoming glider on any one of six adjacent paths, and none of the possible collisions include any output gliders, so you can't get chain reactions."

4. A physical area or extent of something, often rectangular or approximately rectangular.

5. A physical area or extent of something, often rectangular or approximately rectangular.

6. A logical extent or region; a grouping or apportionment of like things treated together as a unit.Examples: "After one disk is mapped, the next block starts at address 0 on the next disk."; "The difficulty of each puzzle would increase as the number of miners increased, which would keep production to one block of transactions roughly every 10 minutes. In addition, the size of each block bounty would halve every 210,000 blocks—first from 50 bitcoins to 25, then from 25 to 12.5, and so on. Around the year 2140, the currency would reach its preordained limit of 21 million bitcoins."