Edit page | Page history | Printable version

tossing

1. The act of throwing upward; a rising and falling suddenly; a rolling and tumbling.

2. (Science: chemical) A process which consists in washing ores by violent agitation in water, in order to separate the lighter or earhy particles; called also tozing, and treloobing, in Cornwall. A process for refining tin by dropping it through the air while melted.