Which prefix means 'Spinal Column'?

Which prefix means 'Spinal Column'?

• A. Phobias
• B. Phot-
• C. Thromb-
• D. Rachi-

Answer: (D)

Prefixes in medical terms often tell you where something is or what part of the body it relates to. The prefix that means the spinal column comes from Greek rhachis and is written as rachi- (sometimes seen as ra chi- in different spellings). It signals spine-related terms, so when you see rachi-, you know the word refers to the spine or spinal column. The other options point to different ideas: phot- means light, thromb- means clot, and phob- (as in phobia) means fear. So rachi- is the one that correctly designates the spinal column.

Prefixes in medical terms often tell you where something is or what part of the body it relates to. The prefix that means the spinal column comes from Greek rhachis and is written as rachi- (sometimes seen as ra chi- in different spellings). It signals spine-related terms, so when you see rachi-, you know the word refers to the spine or spinal column. The other options point to different ideas: phot- means light, thromb- means clot, and phob- (as in phobia) means fear. So rachi- is the one that correctly designates the spinal column.