| solicitude |
the condition or quality of being anxiously concerned or attentive, sometimes excessively so. |
| solid |
having or pertaining to a three-dimensional form. [14 definitions] |
| solid angle |
an angle formed by three or more planes intersecting in a common point, or formed at the peak of a cone. |
| solidarity |
a feeling or condition of unity based on common goals, interests, and sympathies among a group's members. |
| solid fuel |
any of various rocket propellants, combining fuel and oxidizer in a solid storable mass. |
| solid geometry |
the branch of geometry dealing with three-dimensional figures and surfaces. |
| solidify |
to make firm, hard, or solid. [4 definitions] |
| solidity |
the state or quality of being solid or firm; firmness, hardness, or substantiality. [2 definitions] |
| solid rocket |
any rocket that uses solid fuel. |
| Solid South |
formerly, in the United States, the southern states traditionally regarded as solidly supporting the Democratic Party. |
| solid-state |
being or using a technology that employs semiconductors and transistors to control the performance of electrical devices. [2 definitions] |
| solidus |
a gold coin in circulation during the periods of the Roman and Byzantine Empires. [2 definitions] |
| soliloquize |
to speak aloud what is in one's mind when, or as if when, no one is present or listening. |
| soliloquy |
an act of talking or a speech by one who is, or is considered to be, alone. |
| solipsism |
in philosophy, the theory that the self is the only verifiable reality. [2 definitions] |
| solitaire |
any of various card games for one person. [2 definitions] |
| solitary |
being, traveling, or living without others; alone; unaccompanied. [6 definitions] |
| solitary confinement |
the confinement of a prisoner in complete isolation from others, usu. used as a form of punishment. |
| soliton |
in physics, a solitary wave, or a solution to a type of equation that represents such a wave. |
| solitude |
the condition of living or being by oneself; isolation. [3 definitions] |
| solmization |
the act, process, or system of using syllables to represent the different notes of the musical scale, often as a teaching aid. |