.Os
.Sh NAME
.Nm sleep
-.Nd suspend process execution for an interval measured in seconds
+.Nd suspend thread execution for an interval measured in seconds
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.Sh DESCRIPTION
The
.Fn sleep
-function suspends execution of the calling process until either
+function suspends execution of the calling thread until either
.Fa seconds
-seconds have elapsed or a signal is delivered to the process and its
+seconds have elapsed or a signal is delivered to the thread and its
action is to invoke a signal-catching function or to terminate the
-process.
+thread or process.
System activity may lengthen the sleep by an indeterminate amount.
.Pp
This function is implemented using