Which of the following terms refers to lines and figures with specific meanings on a drawing?

The term that refers to lines and figures with specific meanings on a drawing is "symbols." In the context of welding print reading and engineering drawings, symbols serve as a standardized way to convey complex information in a simplified manner. Each symbol represents specific information about the drawing, such as the type of welding process, joint configurations, or material specifications.

Using symbols helps ensure that everyone interpreting the drawing can easily understand the intended design and necessary actions without needing extensive written descriptions. This visual language is crucial in technical fields, particularly welding, where precision and clarity are paramount in the communication of designs and fabrication instructions.

Understanding symbols and their meanings is essential for anyone working with welding prints, as it allows for accurate interpretation of the drawings, leading to successful implementation of the welding processes depicted.