diff --git a/src/components/GlossaryCard.js b/src/components/GlossaryCard.js
index 344452235..a5b58f987 100644
--- a/src/components/GlossaryCard.js
+++ b/src/components/GlossaryCard.js
@@ -1,26 +1,60 @@
-import React from "react";
+import React, { useState } from "react";
 import ArrowUpRight from "../../static/img/ArrowUpRight.svg";
 
-const GlossaryCard = ({name, description, link}) => {
+const GlossaryCard = ({ name, description, link }) => {
+  const [open, setOpen] = useState(false);
+
   return (
-    <a
-      href={link}
-      className="group flex h-full flex-col rounded-xl border border-transparent bg-[var(--ifm-card-background-color)] p-6 shadow-[0_4px_12px_var(--ifm-card-shadow-color)] transition-all duration-300 hover:border-[var(--ifm-color-primary)] hover:shadow-[0_8px_20px_var(--ifm-card-shadow-color)] focus:outline-none focus:ring-2 focus:ring-[var(--ifm-color-primary)] focus:ring-offset-2
-      "
-    >
-      <div className="mb-3 flex items-start justify-between">
-        <h3 className="pr-4 text-xl font-bold text-[var(--ifm-color-primary)]">
-          {name}
-        </h3>
-        <ArrowUpRight
-          className=" flex-shrink-0 text-[var(--ifm-color-emphasis-500)] transition-all duration-300 ease-in-out group-hover:rotate-45 group-hover:text-[var(--ifm-color-primary)]"
-          size={22}
-        />
+    <>
+      <div
+        tabIndex={0}
+        role="button"
+        onClick={() => setOpen(true)}
+        onKeyPress={e => (e.key === 'Enter' || e.key === ' ') && setOpen(true)}
+        className="group flex h-full flex-col rounded-xl border border-transparent bg-[var(--ifm-card-background-color)] p-6 shadow-[0_4px_12px_var(--ifm-card-shadow-color)] transition-all duration-300 hover:border-[var(--ifm-color-primary)] hover:shadow-[0_8px_20px_var(--ifm-card-shadow-color)] focus:outline-none focus:ring-2 focus:ring-[var(--ifm-color-primary)] focus:ring-offset-2 cursor-pointer"
+        aria-label={`Show definition for ${name}`}
+      >
+        <div className="mb-3 flex items-start justify-between">
+          <h3 className="pr-4 text-xl font-bold text-[var(--ifm-color-primary)]">
+            {name}
+          </h3>
+          <ArrowUpRight
+            className=" flex-shrink-0 text-[var(--ifm-color-emphasis-500)] transition-all duration-300 ease-in-out group-hover:rotate-45 group-hover:text-[var(--ifm-color-primary)]"
+            size={22}
+          />
+        </div>
+        <p className="text-sm leading-relaxed text-[var(--ifm-color-emphasis-700)]">
+          {description}
+        </p>
       </div>
-      <p className="text-sm leading-relaxed text-[var(--ifm-color-emphasis-700)]">
-        {description}
-      </p>
-    </a>
+      {open && (
+        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black bg-opacity-40" onClick={() => setOpen(false)}>
+          <div
+            className="bg-white rounded-lg shadow-xl p-8 max-w-md w-full relative"
+            onClick={e => e.stopPropagation()}
+          >
+            <button
+              className="absolute top-2 right-2 text-gray-500 hover:text-gray-800 text-2xl font-bold"
+              onClick={() => setOpen(false)}
+              aria-label="Close"
+            >
+              ×
+            </button>
+            <h2 className="text-2xl font-bold mb-4 text-[var(--ifm-color-primary)]">{name}</h2>
+            <p className="mb-6 text-[var(--ifm-color-emphasis-700)]">{description}</p>
+            <a
+              href={link}
+              target="_blank"
+              rel="noopener noreferrer"
+              className="inline-flex items-center gap-2 rounded bg-[var(--ifm-color-primary)] px-4 py-2 font-semibold text-white hover:bg-[var(--ifm-color-primary-darker)] transition-colors"
+            >
+              Read more
+              <ArrowUpRight size={18} />
+            </a>
+          </div>
+        </div>
+      )}
+    </>
   );
 };
 
diff --git a/static/data/glossaryEntries.js b/static/data/glossaryEntries.js
index 45c1f396d..4da3c93d8 100644
--- a/static/data/glossaryEntries.js
+++ b/static/data/glossaryEntries.js
@@ -104,13 +104,13 @@ export const glossaryEntries = {
     {
       name: "Regression Testing",
       link: "/docs/concepts/reference/glossary/regression-testing",
-      description: "Ensures new code doesn’t break old features.",
+      description: "Ensures new code doesn't break old features.",
     },
   ],
   S: [
     {
       name: "Stubs",
-      ink: "/docs/concepts/reference/glossary/stubs",
+      link: "/docs/concepts/reference/glossary/stubs",
       description: "Simulates methods or APIs during testing.",
     },
     {