If you come across a word like cryoglobulinemia and think, It’s Greek to me, there’s good reason for that. It is Greek. And Latin. Most medical terms — over 90% — originate in Greek and Latin. But don’t let that intimidate you when it comes to medical terminology.

More than 60% of our everyday words are borrowed from Greek and Latin, which means you have a familiarity with medical terminology that you might not realize. It’s not a big jump, for example, to go from acrobat to acromania or acroanesthesia.

Among our tips and strategies for learning medical terminology, we’re going to show you how to put your familiarity to work for you. But first, let’s answer a few questions so we can establish who should study medical terminology and why.

• What is medical terminology?

Medical terminology is the language of healthcare. It’s the means for healthcare professionals to confer on the intricacies of the human body, both in states of health and states of injury or disease. As such, medical terminology comprises the lexicon of labels for all known anatomical features, physiological processes, and medical interventions.

• Why is it important to understand medical terminology?

Understanding medical terminology opens a door to understanding both medicine and the healthcare community. The more you need to understand either of these, the more important your understanding of medical terminology becomes.

• Who should learn medical terminology?

If you’re seeking a career with daily responsibilities that will require you to know an anatomical feature from a physiological process from a medical intervention, then you’ll need to gain fluency in medical language to perform your job.

Equally important, you’ll need to understand medical terminology to succeed in your career training program, as well as your prospective workplace. This is true if you’re choosing a career on the clinical side of healthcare as a medical sonographer, radiation therapist, or magnetic resonance imaging technologist. It’s also true if you’re pursuing a career on the business side of healthcare as a medical scribe, medical transcriptionist, medical biller, or medical coder.

• Is medical terminology hard to learn?

A word like osteochondrodysplasia is an eyeful — and there are thousands of terms like it — but don’t let appearances fool you. Learning medical terminology isn’t as difficult as you’d think. Not if you approach it right, with the right strategies and right resources.

Build Your Medical Vocabulary Brick by Brick

When it comes to medical terminology, think LEGO. A LEGO brick is just a LEGO brick, but when you snap these pieces of plastic together, you get something upscale.

Similarly, word parts — like mini bricks — make up most medical terms. Once you start to learn the word parts, you no longer see an unknowable 21-letter word. When, for example, you look at osteochondrodysplasia, you see:

So osteochondrodysplasia becomes recognizable. You might not know the full extent of the definition, but you piece together that the term refers to a developmental abnormality that affects bone and cartilage.

And just as a LEGO brick can be used in different constructions, you’ll see a same word part in numerous medical terms. In fact, now that you learned four word parts, you have insight on an exponential list of medical terms.

We’ll look at more examples of word parts and show you how familiarity goes a long way in building your medical terminology vocabulary, but first let’s look at the different types of word parts.

3 Component Types

The construction of most medical terms follows the common structure of a prefix, medical root, and suffix.

• Medical Prefixes: When included, the prefix appears at the beginning of a medical term and usually indicates location, direction, time, quality, or quantity.
• Medical Suffixes: The suffix is tacked onto the end of a term and typically indicates a procedure, function, test, condition, or pathology. The suffix may also identify if the term is a noun, adjective, or verb.
• Medical Root Words: The root word is the base part of the medical term and conveys its primary meaning, which is often a body part or body system. Most medical terms contain one or more root words.

Deconstructing Medical Terms to Their Components

Mentally dividing a medical term into its word parts will help you to figure out the meaning of the unfamiliar term. But before you can deconstruct medical terms, you need to know a few things about how they’re constructed.

A medical term can consist of almost any combination of word parts:

• Prefix, root word, suffix
• Root word, suffix
• Root word, root word, suffix
• Root word, root word, root word
• Prefix, suffix

Combining Vowel

Medical terms get awkward to pronounce without a device for linking word parts, and so the combining vowel system was developed.

When two medical root words are connected, a combining vowel is added to the end of the first root word. A combining vowel is used with the second root word if the subsequent word part begins with a consonant. The letter o is the most commonly used combining vowel.

By way of example, gastr is the root word for stomach. When linked with the suffix -logy, meaning study or medical field, an o is added, forming the word gastrology.

But if the word part following gastr begins with a vowel, then the combining vowel is unnecessary, as seen in the example term gastritis, which means inflammation of the stomach lining.

In the medical term deconstructed below, we see an example of two combining vowel practices — an o linking root words, and the omission of the combining o when the suffix begins with a vowel.

But what about when a root word ends in a vowel? The combining o is again omitted, as seen in the medical terminology example enterocentesis, which refers to a surgical puncture of the intestines. Enterocentesis also illustrates that not all root words refer to human anatomy.

Lastly, if you’re wondering why we didn’t break down a medical term with a prefix to illustrate how the prefix links to a root word, it’s because the combining vowel only applies to root words and suffixes.  

Whether a prefix ends in a vowel or a consonant is of no consequence to the formation of the medical term, as you can see in these two examples.

While you’re probably familiar with the words hypoglycemia (low blood sugar) and hyperthermia (elevated body temperature), you can now see where their definitions originate.

How to Learn Medical Terminology

Understanding the structure of medical terms allows you to see the word parts and leverage an ever-increasing familiarity with them. This is an expedient way to get a handle on medical language.

Consider the word hemorrhage, for instance. You know the meaning of the term, but you probably never noticed the word parts. Can you see the structure now? If not, look for an o. Not all medical terms have a combining o, but when they do, it’s an obvious demarcation of structure.

The o in hemorrhage divides the term in two: hem + o + rrhage. You may recognize hem or guess that it means blood, and you’d be correct. -rrhage is likely new to you. It means burst, as in a dam breaking, and conveys excessive bleeding or fluid loss resulting from a damaged blood vessel.

Making a note of the structure in this one term gives you a head start on words like rhinorrhage, splenorrhage, otorrhage, hepatorrage. And once you learn the root words in these four terms — nose, spleen, ear, and liver respectively — you’re able to expand your medical vocabulary in four directions.

Learn From Familiar Terms

Here are a few tips that will take you far:

• Learn from the words you know. If, for example, you know that a tonsillectomy is the surgical removal of the tonsils, then you know what the suffix -ectomy means. Make a flashcard.
• When you learn a new medical term, make flashcards of its word parts.
• Quiz yourself often.

Organize Your Study of Medical Root Words by Body System

When learning new information, context is like a corkboard in your brain, giving the information a place to stick. For this reason, you’ll find lessons structured categorically when you take anatomy and medical terminology courses. Understanding and retaining information is easier with a categorical approach.

While reviewing a sampling of root words below, remember: As with a prefix and suffix, a root word is a part of the medical term and is not a word in itself. A suffix, with few exceptions, will be added to the root word to complete it.

Earlier we told you that a medical term could consist of almost any combination of word parts — including root words only. This is a rare occurrence and, as we’ll show you, only technically true.

Sternocleidomastoid. In this example, three root words are combined to form sternocleidomastoid, which refers to a muscle on each side of your neck that starts at the top of the sternum and the clavicle, then reaches up to insert behind your ear on the mastoid process of the temporal bone. It’s an unusual medical term, in that it doesn’t have a suffix. As you’ll soon see, though, -oid is a suffix meaning to resemble or similar to. Because it’s built into the root word mastoid, these three root words together are complete.

Of course, root words can represent more than body parts and body systems.