| 1. | the act of following up. |
| 2. | an action or thing that serves to increase the effectiveness of a previous one, as a second or subsequent letter, phone call, or visit. |
| 3. | Also called follow. Journalism.
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| 4. | designed or serving to follow up, esp. to increase the effectiveness of a previous action: a follow-up interview; a follow-up offer. |
| 5. | of or pertaining to action that follows an initial treatment, course of study, etc.: follow-up care for mental patients; a follow-up survey. |

| fol·low-up or fol·low·up (fŏl'ō-ŭp') n.
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followup
On Usenet, a posting generated in response to another posting (as opposed to a reply, which goes by e-mail rather than being broadcast). Followups include the ID of the parent message in their headers; smart news-readers can use this information to present Usenet news in "conversation" sequence rather than order-of-arrival. See thread.
[The Jargon File]