7-letter words that end in os
- reredos — a screen or a decorated part of the wall behind an altar in a church.
- rhombos — a wooden slat attached to a strap that makes a roaring sound when the strap is whirled. It has been associated with religious rituals throughout the world
- risc os — (operating system) (Reduced Instruction Set Computer Operating System) The operating system originally developed by Acorn Computers for their Archimedes family of personal computers. RISC OS replaced the Arthur operating system used on the first Archimedeses. It is written in ARM assembly code and distributed on ROM so it takes up no disk space and takes no time to load. It supports cooperative multitasking with memory management and includes a graphical user interface or "WIMP". It is written in a highly modular style and makes extensive use of vectors so it is easy to modify and extend by loading new modules in RAM. Many system calls (called "SWIs" - software interrupts) are available to application programmers and some of these are available as user comands via a built-in command-line interpreter. RISC OS also supported outline fonts when only bitmap fonts were available on most other platforms. Following the virtual demise of Acorn, development of RISC OS 4 was taken over by RISCOS Ltd on 1999-03-05 and released on 1999-07-01.
- rooibos — an evergreen shrub of South Africa cultivated for tea leaves
- seirios — Sirius (def 2).
- shabbos — Sabbath (def 1).
- silenos — Silenus.
- siphnos — a Greek island in the SW Aegean Sea, in the Cyclades group: gold and silver mines. 28 sq. mi. (75 sq. km).
- skyphos — a cup characterized by a deep bowl, two handles projecting horizontally near the rim, and either a flat base or a foot.
- stamnos — a storage jar having an oval body tapering at the base and two horizontal handles set on the shoulder.
- stichos — a verse or a short poetic line
- studios — the workroom or atelier of an artist, as a painter or sculptor.
- tapajos — a river flowing NE through central Brazil to the Amazon. 500 miles (800 km) long.
- temenos — a consecrated area, esp one surrounding a temple
- tenedos — an island in the Aegean, near the entrance to the Dardanelles, belonging to Turkey.
- thermos — a vacuum bottle or similar container lined with an insulating material, such as polystyrene, to keep liquids hot or cold.
- thronos — an ancient Greek chair, usually highly ornamented, having a high seat and back and rectangular turned or carved legs ending in animal feet.
- unkelos — Onkelos.
- weirdos — Plural form of weirdo.